diff --git a/frontend/src/admin/sections/TariffsSection.svelte b/frontend/src/admin/sections/TariffsSection.svelte
index 95fda92..48734be 100644
--- a/frontend/src/admin/sections/TariffsSection.svelte
+++ b/frontend/src/admin/sections/TariffsSection.svelte
@@ -107,40 +107,40 @@
       .join(" · ");
   }
 
-  function fieldFor(key) {
-    return settingsFieldMap.get(key) || { key, value: "" };
+  function fieldFor(key, fieldMap = settingsFieldMap) {
+    return fieldMap.get(key) || { key, value: "" };
   }
 
-  function valueForKey(key) {
-    if (settingsDirty[key]?.deleted) return "";
-    if (Object.prototype.hasOwnProperty.call(settingsDirty, key)) {
-      return settingsDirty[key].value;
+  function valueForKey(key, dirty = settingsDirty, fieldMap = settingsFieldMap) {
+    if (dirty[key]?.deleted) return "";
+    if (Object.prototype.hasOwnProperty.call(dirty, key)) {
+      return dirty[key].value;
     }
-    return fieldFor(key).value ?? "";
+    return fieldFor(key, fieldMap).value ?? "";
   }
 
-  function boolValue(key) {
-    return Boolean(valueForKey(key));
+  function boolValue(key, dirty = settingsDirty, fieldMap = settingsFieldMap) {
+    return Boolean(valueForKey(key, dirty, fieldMap));
   }
 
   function setSetting(key, value) {
     settingsStore.markDirty(key, value);
   }
 
-  function isSettingDirty(key) {
-    return Boolean(settingsDirty[key]);
+  function isSettingDirty(key, dirty = settingsDirty) {
+    return Boolean(dirty[key]);
   }
 
-  function dirtyCount(keys) {
-    return (keys || []).filter((key) => isSettingDirty(key)).length;
+  function dirtyCount(keys, dirty = settingsDirty) {
+    return (keys || []).filter((key) => isSettingDirty(key, dirty)).length;
   }
 
   function resetSetting(key) {
     settingsStore.clearDirty(key);
   }
 
-  function csvList(key) {
-    return String(valueForKey(key) || "")
+  function csvList(key, dirty = settingsDirty, fieldMap = settingsFieldMap) {
+    return String(valueForKey(key, dirty, fieldMap) || "")
       .split(",")
       .map((item) => item.trim())
       .filter(Boolean);
@@ -230,8 +230,12 @@
         </small>
       </div>
       <div class="admin-editor-section-actions">
-        <AdminBadge variant={boolValue("TRIAL_ENABLED") ? "success" : "muted"}>
-          {boolValue("TRIAL_ENABLED")
+        <AdminBadge
+          variant={boolValue("TRIAL_ENABLED", settingsDirty, settingsFieldMap)
+            ? "success"
+            : "muted"}
+        >
+          {boolValue("TRIAL_ENABLED", settingsDirty, settingsFieldMap)
             ? at("enabled", {}, "Enabled")
             : at("disabled", {}, "Disabled")}
         </AdminBadge>
@@ -253,7 +257,10 @@
     </header>
     <div class="admin-card-body admin-trial-settings-body">
       <div class="admin-settings-field-groups admin-trial-settings-groups">
-        <section class="admin-settings-field-group" class:is-dirty={dirtyCount(TRIAL_SWITCH_KEYS)}>
+        <section
+          class="admin-settings-field-group"
+          class:is-dirty={dirtyCount(TRIAL_SWITCH_KEYS, settingsDirty)}
+        >
           <header class="admin-settings-field-group-head">
             <div class="admin-settings-field-group-head-copy">
               <strong>{at("tariffs_trial_group_switch", {}, "Доступ")}</strong>
@@ -265,12 +272,12 @@
                 )}
               </small>
             </div>
-            {#if dirtyCount(TRIAL_SWITCH_KEYS)}
+            {#if dirtyCount(TRIAL_SWITCH_KEYS, settingsDirty)}
               <AdminBadge variant="warning">
                 {at(
                   "settings_dirty_count",
-                  { count: dirtyCount(TRIAL_SWITCH_KEYS) },
-                  `Изменений: ${dirtyCount(TRIAL_SWITCH_KEYS)}`
+                  { count: dirtyCount(TRIAL_SWITCH_KEYS, settingsDirty) },
+                  `Изменений: ${dirtyCount(TRIAL_SWITCH_KEYS, settingsDirty)}`
                 )}
               </AdminBadge>
             {/if}
@@ -278,12 +285,12 @@
           <div class="admin-settings-field-group-body">
             <div
               class="admin-setting admin-trial-setting-row"
-              class:is-dirty={isSettingDirty("TRIAL_ENABLED")}
+              class:is-dirty={isSettingDirty("TRIAL_ENABLED", settingsDirty)}
             >
               <div class="admin-setting-meta">
                 <strong>
                   {at("tariffs_trial_enabled", {}, "Триал включён")}
-                  {#if isSettingDirty("TRIAL_ENABLED")}
+                  {#if isSettingDirty("TRIAL_ENABLED", settingsDirty)}
                     <AdminBadge variant="warning"
                       >{at("settings_badge_dirty", {}, "Изменено")}</AdminBadge
                     >
@@ -294,19 +301,19 @@
               <div class="admin-setting-control">
                 <div class="admin-setting-switch">
                   <Switch.Root
-                    checked={boolValue("TRIAL_ENABLED")}
+                    checked={boolValue("TRIAL_ENABLED", settingsDirty, settingsFieldMap)}
                     onCheckedChange={(checked) => setSetting("TRIAL_ENABLED", checked)}
                     class="admin-switch-root"
                   >
                     <Switch.Thumb class="admin-switch-thumb" />
                   </Switch.Root>
                   <span
-                    >{boolValue("TRIAL_ENABLED")
+                    >{boolValue("TRIAL_ENABLED", settingsDirty, settingsFieldMap)
                       ? at("enabled", {}, "Включено")
                       : at("disabled", {}, "Выключено")}</span
                   >
                 </div>
-                {#if isSettingDirty("TRIAL_ENABLED")}
+                {#if isSettingDirty("TRIAL_ENABLED", settingsDirty)}
                   <AdminButton
                     size="sm"
                     variant="ghost"
@@ -321,7 +328,10 @@
           </div>
         </section>
 
-        <section class="admin-settings-field-group" class:is-dirty={dirtyCount(TRIAL_GENERAL_KEYS)}>
+        <section
+          class="admin-settings-field-group"
+          class:is-dirty={dirtyCount(TRIAL_GENERAL_KEYS, settingsDirty)}
+        >
           <header class="admin-settings-field-group-head">
             <div class="admin-settings-field-group-head-copy">
               <strong>{at("tariffs_trial_group_general", {}, "Общие настройки")}</strong>
@@ -333,12 +343,12 @@
                 )}
               </small>
             </div>
-            {#if dirtyCount(TRIAL_GENERAL_KEYS)}
+            {#if dirtyCount(TRIAL_GENERAL_KEYS, settingsDirty)}
               <AdminBadge variant="warning">
                 {at(
                   "settings_dirty_count",
-                  { count: dirtyCount(TRIAL_GENERAL_KEYS) },
-                  `Изменений: ${dirtyCount(TRIAL_GENERAL_KEYS)}`
+                  { count: dirtyCount(TRIAL_GENERAL_KEYS, settingsDirty) },
+                  `Изменений: ${dirtyCount(TRIAL_GENERAL_KEYS, settingsDirty)}`
                 )}
               </AdminBadge>
             {/if}
@@ -346,12 +356,12 @@
           <div class="admin-settings-field-group-body">
             <div
               class="admin-setting admin-trial-setting-row"
-              class:is-dirty={isSettingDirty("TRIAL_DURATION_DAYS")}
+              class:is-dirty={isSettingDirty("TRIAL_DURATION_DAYS", settingsDirty)}
             >
               <div class="admin-setting-meta">
                 <strong>
                   {at("tariffs_trial_days", {}, "Длительность, дней")}
-                  {#if isSettingDirty("TRIAL_DURATION_DAYS")}
+                  {#if isSettingDirty("TRIAL_DURATION_DAYS", settingsDirty)}
                     <AdminBadge variant="warning"
                       >{at("settings_badge_dirty", {}, "Изменено")}</AdminBadge
                     >
@@ -365,10 +375,10 @@
                   type="number"
                   min="0"
                   step="1"
-                  value={valueForKey("TRIAL_DURATION_DAYS")}
+                  value={valueForKey("TRIAL_DURATION_DAYS", settingsDirty, settingsFieldMap)}
                   oninput={(event) => setSetting("TRIAL_DURATION_DAYS", event.currentTarget.value)}
                 />
-                {#if isSettingDirty("TRIAL_DURATION_DAYS")}
+                {#if isSettingDirty("TRIAL_DURATION_DAYS", settingsDirty)}
                   <AdminButton
                     size="sm"
                     variant="ghost"
@@ -382,12 +392,12 @@
             </div>
             <div
               class="admin-setting admin-trial-setting-row"
-              class:is-dirty={isSettingDirty("TRIAL_TRAFFIC_LIMIT_GB")}
+              class:is-dirty={isSettingDirty("TRIAL_TRAFFIC_LIMIT_GB", settingsDirty)}
             >
               <div class="admin-setting-meta">
                 <strong>
                   {at("tariffs_trial_traffic", {}, "Лимит трафика, GB")}
-                  {#if isSettingDirty("TRIAL_TRAFFIC_LIMIT_GB")}
+                  {#if isSettingDirty("TRIAL_TRAFFIC_LIMIT_GB", settingsDirty)}
                     <AdminBadge variant="warning"
                       >{at("settings_badge_dirty", {}, "Изменено")}</AdminBadge
                     >
@@ -401,11 +411,11 @@
                   type="number"
                   min="0"
                   step="0.1"
-                  value={valueForKey("TRIAL_TRAFFIC_LIMIT_GB")}
+                  value={valueForKey("TRIAL_TRAFFIC_LIMIT_GB", settingsDirty, settingsFieldMap)}
                   oninput={(event) =>
                     setSetting("TRIAL_TRAFFIC_LIMIT_GB", event.currentTarget.value)}
                 />
-                {#if isSettingDirty("TRIAL_TRAFFIC_LIMIT_GB")}
+                {#if isSettingDirty("TRIAL_TRAFFIC_LIMIT_GB", settingsDirty)}
                   <AdminButton
                     size="sm"
                     variant="ghost"
@@ -420,7 +430,10 @@
           </div>
         </section>
 
-        <section class="admin-settings-field-group" class:is-dirty={dirtyCount(TRIAL_RESET_KEYS)}>
+        <section
+          class="admin-settings-field-group"
+          class:is-dirty={dirtyCount(TRIAL_RESET_KEYS, settingsDirty)}
+        >
           <header class="admin-settings-field-group-head">
             <div class="admin-settings-field-group-head-copy">
               <strong>{at("tariffs_trial_group_reset", {}, "Сброс трафика")}</strong>
@@ -432,12 +445,12 @@
                 )}
               </small>
             </div>
-            {#if dirtyCount(TRIAL_RESET_KEYS)}
+            {#if dirtyCount(TRIAL_RESET_KEYS, settingsDirty)}
               <AdminBadge variant="warning">
                 {at(
                   "settings_dirty_count",
-                  { count: dirtyCount(TRIAL_RESET_KEYS) },
-                  `Изменений: ${dirtyCount(TRIAL_RESET_KEYS)}`
+                  { count: dirtyCount(TRIAL_RESET_KEYS, settingsDirty) },
+                  `Изменений: ${dirtyCount(TRIAL_RESET_KEYS, settingsDirty)}`
                 )}
               </AdminBadge>
             {/if}
@@ -445,12 +458,12 @@
           <div class="admin-settings-field-group-body">
             <div
               class="admin-setting admin-trial-setting-row"
-              class:is-dirty={isSettingDirty("TRIAL_TRAFFIC_STRATEGY")}
+              class:is-dirty={isSettingDirty("TRIAL_TRAFFIC_STRATEGY", settingsDirty)}
             >
               <div class="admin-setting-meta">
                 <strong>
                   {at("tariffs_trial_strategy", {}, "Стратегия сброса трафика")}
-                  {#if isSettingDirty("TRIAL_TRAFFIC_STRATEGY")}
+                  {#if isSettingDirty("TRIAL_TRAFFIC_STRATEGY", settingsDirty)}
                     <AdminBadge variant="warning"
                       >{at("settings_badge_dirty", {}, "Изменено")}</AdminBadge
                     >
@@ -461,12 +474,15 @@
               <div class="admin-setting-control">
                 <AdminSelect
                   class="admin-setting-select"
-                  value={String(valueForKey("TRIAL_TRAFFIC_STRATEGY") || "NO_RESET")}
+                  value={String(
+                    valueForKey("TRIAL_TRAFFIC_STRATEGY", settingsDirty, settingsFieldMap) ||
+                      "NO_RESET"
+                  )}
                   items={TRAFFIC_STRATEGY_OPTIONS}
                   ariaLabel={at("tariffs_trial_strategy", {}, "Стратегия сброса трафика")}
                   onValueChange={(value) => setSetting("TRIAL_TRAFFIC_STRATEGY", value)}
                 />
-                {#if isSettingDirty("TRIAL_TRAFFIC_STRATEGY")}
+                {#if isSettingDirty("TRIAL_TRAFFIC_STRATEGY", settingsDirty)}
                   <AdminButton
                     size="sm"
                     variant="ghost"
@@ -481,7 +497,10 @@
           </div>
         </section>
 
-        <section class="admin-settings-field-group" class:is-dirty={dirtyCount(TRIAL_SQUAD_KEYS)}>
+        <section
+          class="admin-settings-field-group"
+          class:is-dirty={dirtyCount(TRIAL_SQUAD_KEYS, settingsDirty)}
+        >
           <header class="admin-settings-field-group-head">
             <div class="admin-settings-field-group-head-copy">
               <strong>{at("tariffs_trial_group_squads", {}, "Сквады")}</strong>
@@ -493,12 +512,12 @@
                 )}
               </small>
             </div>
-            {#if dirtyCount(TRIAL_SQUAD_KEYS)}
+            {#if dirtyCount(TRIAL_SQUAD_KEYS, settingsDirty)}
               <AdminBadge variant="warning">
                 {at(
                   "settings_dirty_count",
-                  { count: dirtyCount(TRIAL_SQUAD_KEYS) },
-                  `Изменений: ${dirtyCount(TRIAL_SQUAD_KEYS)}`
+                  { count: dirtyCount(TRIAL_SQUAD_KEYS, settingsDirty) },
+                  `Изменений: ${dirtyCount(TRIAL_SQUAD_KEYS, settingsDirty)}`
                 )}
               </AdminBadge>
             {/if}
@@ -506,12 +525,12 @@
           <div class="admin-settings-field-group-body">
             <div
               class="admin-setting admin-trial-setting-row"
-              class:is-dirty={isSettingDirty("TRIAL_SQUAD_UUIDS")}
+              class:is-dirty={isSettingDirty("TRIAL_SQUAD_UUIDS", settingsDirty)}
             >
               <div class="admin-setting-meta">
                 <strong>
                   {at("tariffs_trial_squads", {}, "Internal Squads для триала")}
-                  {#if isSettingDirty("TRIAL_SQUAD_UUIDS")}
+                  {#if isSettingDirty("TRIAL_SQUAD_UUIDS", settingsDirty)}
                     <AdminBadge variant="warning"
                       >{at("settings_badge_dirty", {}, "Изменено")}</AdminBadge
                     >
@@ -542,11 +561,12 @@
                 <input
                   class="input"
                   type="text"
-                  placeholder={valueForKey("USER_SQUAD_UUIDS") || "uuid-a,uuid-b"}
-                  value={valueForKey("TRIAL_SQUAD_UUIDS")}
+                  placeholder={valueForKey("USER_SQUAD_UUIDS", settingsDirty, settingsFieldMap) ||
+                    "uuid-a,uuid-b"}
+                  value={valueForKey("TRIAL_SQUAD_UUIDS", settingsDirty, settingsFieldMap)}
                   oninput={(event) => setSetting("TRIAL_SQUAD_UUIDS", event.currentTarget.value)}
                 />
-                {#if isSettingDirty("TRIAL_SQUAD_UUIDS")}
+                {#if isSettingDirty("TRIAL_SQUAD_UUIDS", settingsDirty)}
                   <AdminButton
                     size="sm"
                     variant="ghost"
@@ -557,7 +577,7 @@
                   </AdminButton>
                 {/if}
                 <div class="admin-chip-list">
-                  {#each csvList("TRIAL_SQUAD_UUIDS") as uuid}
+                  {#each csvList("TRIAL_SQUAD_UUIDS", settingsDirty, settingsFieldMap) as uuid}
                     <button type="button" class="admin-chip" onclick={() => removeTrialSquad(uuid)}>
                       {trialSquadLabel(uuid)}
                       <X size={12} />
@@ -775,7 +795,7 @@
                 <strong>{months} {at("months_short", {}, "mo")}</strong>
                 <div class="admin-setting-switch">
                   <Switch.Root
-                    checked={boolValue(enabledKey)}
+                    checked={boolValue(enabledKey, settingsDirty, settingsFieldMap)}
                     onCheckedChange={(checked) => setSetting(enabledKey, checked)}
                     class="admin-switch-root"
                   >
@@ -787,7 +807,7 @@
                   type="number"
                   min="0"
                   step="1"
-                  value={valueForKey(rubKey)}
+                  value={valueForKey(rubKey, settingsDirty, settingsFieldMap)}
                   oninput={(event) => setSetting(rubKey, event.currentTarget.value)}
                 />
                 <input
@@ -795,7 +815,7 @@
                   type="number"
                   min="0"
                   step="1"
-                  value={valueForKey(starsKey)}
+                  value={valueForKey(starsKey, settingsDirty, settingsFieldMap)}
                   oninput={(event) => setSetting(starsKey, event.currentTarget.value)}
                 />
               </div>
@@ -809,7 +829,7 @@
               <input
                 class="input"
                 type="text"
-                value={valueForKey("TRAFFIC_PACKAGES")}
+                value={valueForKey("TRAFFIC_PACKAGES", settingsDirty, settingsFieldMap)}
                 oninput={(event) => setSetting("TRAFFIC_PACKAGES", event.currentTarget.value)}
               />
             </label>
@@ -821,7 +841,7 @@
               <input
                 class="input"
                 type="text"
-                value={valueForKey("STARS_TRAFFIC_PACKAGES")}
+                value={valueForKey("STARS_TRAFFIC_PACKAGES", settingsDirty, settingsFieldMap)}
                 oninput={(event) => setSetting("STARS_TRAFFIC_PACKAGES", event.currentTarget.value)}
               />
             </label>
diff --git a/frontend/src/lib/webapp/mockApi.js b/frontend/src/lib/webapp/mockApi.js
index 4088e14..59f9ce1 100644
--- a/frontend/src/lib/webapp/mockApi.js
+++ b/frontend/src/lib/webapp/mockApi.js
@@ -467,6 +467,21 @@ export async function mockApi(path, options = {}, context = {}) {
       if (Object.prototype.hasOwnProperty.call(updates, "WEBAPP_FAVICON_USE_CUSTOM")) {
         DEV_MOCK.config.faviconUseCustom = Boolean(updates.WEBAPP_FAVICON_USE_CUSTOM);
       }
+      if (Object.prototype.hasOwnProperty.call(updates, "TRIAL_ENABLED")) {
+        DEV_MOCK.config.trialEnabled = Boolean(updates.TRIAL_ENABLED);
+      }
+      if (Object.prototype.hasOwnProperty.call(updates, "TRIAL_DURATION_DAYS")) {
+        DEV_MOCK.config.trialDurationDays = updates.TRIAL_DURATION_DAYS;
+      }
+      if (Object.prototype.hasOwnProperty.call(updates, "TRIAL_TRAFFIC_LIMIT_GB")) {
+        DEV_MOCK.config.trialTrafficLimitGb = updates.TRIAL_TRAFFIC_LIMIT_GB;
+      }
+      if (Object.prototype.hasOwnProperty.call(updates, "TRIAL_TRAFFIC_STRATEGY")) {
+        DEV_MOCK.config.trialTrafficStrategy = updates.TRIAL_TRAFFIC_STRATEGY || "NO_RESET";
+      }
+      if (Object.prototype.hasOwnProperty.call(updates, "TRIAL_SQUAD_UUIDS")) {
+        DEV_MOCK.config.trialSquadUuids = updates.TRIAL_SQUAD_UUIDS || "";
+      }
     } catch (_e) {
       void _e;
     }
@@ -634,7 +649,7 @@ export async function mockApi(path, options = {}, context = {}) {
               section: "pricing",
               subsection: "trial",
               label: "Триал включён",
-              value: true,
+              value: Boolean(DEV_MOCK.config.trialEnabled),
             },
             {
               key: "TRIAL_DURATION_DAYS",
@@ -642,7 +657,7 @@ export async function mockApi(path, options = {}, context = {}) {
               section: "pricing",
               subsection: "trial",
               label: "Длительность триала (дней)",
-              value: 3,
+              value: DEV_MOCK.config.trialDurationDays ?? 3,
             },
             {
               key: "TRIAL_TRAFFIC_LIMIT_GB",
@@ -650,7 +665,7 @@ export async function mockApi(path, options = {}, context = {}) {
               section: "pricing",
               subsection: "trial",
               label: "Лимит трафика триала (ГБ)",
-              value: 5,
+              value: DEV_MOCK.config.trialTrafficLimitGb ?? 5,
             },
             {
               key: "TRIAL_TRAFFIC_STRATEGY",
@@ -658,7 +673,7 @@ export async function mockApi(path, options = {}, context = {}) {
               section: "pricing",
               subsection: "trial",
               label: "Стратегия сброса трафика триала",
-              value: "NO_RESET",
+              value: DEV_MOCK.config.trialTrafficStrategy || "NO_RESET",
             },
             {
               key: "TRIAL_SQUAD_UUIDS",
@@ -666,7 +681,7 @@ export async function mockApi(path, options = {}, context = {}) {
               section: "pricing",
               subsection: "trial",
               label: "Internal Squads для триала",
-              value: "2f2f6e0a-1f2d-4e80-a33b-0ebf3a409012",
+              value: DEV_MOCK.config.trialSquadUuids || "",
             },
             ...[
               ["MONTH_1_ENABLED", "bool", true],
diff --git a/frontend/src/lib/webapp/previewMock.js b/frontend/src/lib/webapp/previewMock.js
index 11dbd2b..36484dd 100644
--- a/frontend/src/lib/webapp/previewMock.js
+++ b/frontend/src/lib/webapp/previewMock.js
@@ -208,6 +208,11 @@ export const DEV_MOCK = {
     logoEmojiFont: "system",
     faviconUrl: "/webapp-favicon/19b2a242e5b7bc2d/icon-180.png",
     faviconUseCustom: false,
+    trialEnabled: true,
+    trialDurationDays: 3,
+    trialTrafficLimitGb: 5,
+    trialTrafficStrategy: "NO_RESET",
+    trialSquadUuids: "2f2f6e0a-1f2d-4e80-a33b-0ebf3a409012",
     apiBase: "/api",
     adminJsAsset: "subscription_webapp_admin.js",
     adminCssAsset: "subscription_webapp_admin.css",