diff --git a/packages/twenty-server/src/database/commands/upgrade-version-command/1-22/1-22-upgrade-version-command.module.ts b/packages/twenty-server/src/database/commands/upgrade-version-command/1-22/1-22-upgrade-version-command.module.ts
index 8aebc1f9da..b893ef8c7d 100644
--- a/packages/twenty-server/src/database/commands/upgrade-version-command/1-22/1-22-upgrade-version-command.module.ts
+++ b/packages/twenty-server/src/database/commands/upgrade-version-command/1-22/1-22-upgrade-version-command.module.ts
@@ -3,6 +3,7 @@ import { Module } from '@nestjs/common';
 import { WorkspaceIteratorModule } from 'src/database/commands/command-runners/workspace-iterator.module';
 import { BackfillPageLayoutsAndFieldsWidgetViewFieldsCommand } from 'src/database/commands/upgrade-version-command/1-22/1-22-workspace-command-1780000001000-backfill-page-layouts-and-fields-widget-view-fields.command';
 import { BackfillStandardSkillsCommand } from 'src/database/commands/upgrade-version-command/1-22/1-22-workspace-command-1780000002000-backfill-standard-skills.command';
+import { FixMergeCommandSelectAllCommand } from 'src/database/commands/upgrade-version-command/1-22/1-22-workspace-command-1780000003000-fix-merge-command-select-all.command';
 import { AddSendEmailRecordSelectionCommandMenuItemsCommand } from 'src/database/commands/upgrade-version-command/1-22/1-22-workspace-command-1775500016000-add-send-email-record-selection-command-menu-items.command';
 import { ApplicationModule } from 'src/engine/core-modules/application/application.module';
 import { FeatureFlagModule } from 'src/engine/core-modules/feature-flag/feature-flag.module';
@@ -21,6 +22,7 @@ import { WorkspaceMigrationModule } from 'src/engine/workspace-manager/workspace
     AddSendEmailRecordSelectionCommandMenuItemsCommand,
     BackfillPageLayoutsAndFieldsWidgetViewFieldsCommand,
     BackfillStandardSkillsCommand,
+    FixMergeCommandSelectAllCommand,
   ],
 })
 export class V1_22_UpgradeVersionCommandModule {}
diff --git a/packages/twenty-server/src/database/commands/upgrade-version-command/1-22/1-22-workspace-command-1780000003000-fix-merge-command-select-all.command.ts b/packages/twenty-server/src/database/commands/upgrade-version-command/1-22/1-22-workspace-command-1780000003000-fix-merge-command-select-all.command.ts
new file mode 100644
index 0000000000..e9f1793ec1
--- /dev/null
+++ b/packages/twenty-server/src/database/commands/upgrade-version-command/1-22/1-22-workspace-command-1780000003000-fix-merge-command-select-all.command.ts
@@ -0,0 +1,140 @@
+import { Command } from 'nest-commander';
+import { isDefined } from 'twenty-shared/utils';
+
+import { ActiveOrSuspendedWorkspaceCommandRunner } from 'src/database/commands/command-runners/active-or-suspended-workspace.command-runner';
+import { WorkspaceIteratorService } from 'src/database/commands/command-runners/workspace-iterator.service';
+import { type RunOnWorkspaceArgs } from 'src/database/commands/command-runners/workspace.command-runner';
+import { RegisteredWorkspaceCommand } from 'src/engine/core-modules/upgrade/decorators/registered-workspace-command.decorator';
+import { ApplicationService } from 'src/engine/core-modules/application/application.service';
+import { WorkspaceCacheService } from 'src/engine/workspace-cache/services/workspace-cache.service';
+import { STANDARD_COMMAND_MENU_ITEMS } from 'src/engine/workspace-manager/twenty-standard-application/constants/standard-command-menu-item.constant';
+import { computeTwentyStandardApplicationAllFlatEntityMaps } from 'src/engine/workspace-manager/twenty-standard-application/utils/twenty-standard-application-all-flat-entity-maps.constant';
+import { WorkspaceMigrationValidateBuildAndRunService } from 'src/engine/workspace-manager/workspace-migration/services/workspace-migration-validate-build-and-run-service';
+
+const UNIVERSAL_IDENTIFIERS_TO_FIX = new Set<string>([
+  STANDARD_COMMAND_MENU_ITEMS.mergeMultipleRecords.universalIdentifier,
+]);
+
+@RegisteredWorkspaceCommand('1.22.0', 1780000003000)
+@Command({
+  name: 'upgrade:1-22:fix-merge-command-select-all',
+  description:
+    'Fix merge command menu item to not appear in select-all (exclusion) mode',
+})
+export class FixMergeCommandSelectAllCommand extends ActiveOrSuspendedWorkspaceCommandRunner {
+  constructor(
+    protected readonly workspaceIteratorService: WorkspaceIteratorService,
+    private readonly applicationService: ApplicationService,
+    private readonly workspaceMigrationValidateBuildAndRunService: WorkspaceMigrationValidateBuildAndRunService,
+    private readonly workspaceCacheService: WorkspaceCacheService,
+  ) {
+    super(workspaceIteratorService);
+  }
+
+  override async runOnWorkspace({
+    workspaceId,
+    options,
+  }: RunOnWorkspaceArgs): Promise<void> {
+    const isDryRun = options.dryRun ?? false;
+
+    this.logger.log(
+      `${isDryRun ? '[DRY RUN] ' : ''}Starting merge command select-all expression fix for workspace ${workspaceId}`,
+    );
+
+    const { twentyStandardFlatApplication } =
+      await this.applicationService.findWorkspaceTwentyStandardAndCustomApplicationOrThrow(
+        { workspaceId },
+      );
+
+    const { flatCommandMenuItemMaps: existingFlatCommandMenuItemMaps } =
+      await this.workspaceCacheService.getOrRecompute(workspaceId, [
+        'flatCommandMenuItemMaps',
+      ]);
+
+    const { allFlatEntityMaps: standardAllFlatEntityMaps } =
+      computeTwentyStandardApplicationAllFlatEntityMaps({
+        shouldIncludeRecordPageLayouts: true,
+        now: new Date().toISOString(),
+        workspaceId,
+        twentyStandardApplicationId: twentyStandardFlatApplication.id,
+      });
+
+    const itemsToUpdate = [...UNIVERSAL_IDENTIFIERS_TO_FIX]
+      .map((universalIdentifier) => {
+        const standardItem =
+          standardAllFlatEntityMaps.flatCommandMenuItemMaps
+            .byUniversalIdentifier[universalIdentifier];
+        const existingItem =
+          existingFlatCommandMenuItemMaps.byUniversalIdentifier[
+            universalIdentifier
+          ];
+
+        if (
+          !isDefined(standardItem) ||
+          !isDefined(existingItem) ||
+          existingItem.conditionalAvailabilityExpression ===
+            standardItem.conditionalAvailabilityExpression
+        ) {
+          return undefined;
+        }
+
+        return {
+          ...existingItem,
+          conditionalAvailabilityExpression:
+            standardItem.conditionalAvailabilityExpression,
+          updatedAt: new Date().toISOString(),
+        };
+      })
+      .filter(isDefined);
+
+    if (itemsToUpdate.length === 0) {
+      this.logger.log(
+        `Merge command menu item expression already up to date for workspace ${workspaceId}`,
+      );
+
+      return;
+    }
+
+    this.logger.log(
+      `Found ${itemsToUpdate.length} command menu item(s) to update for workspace ${workspaceId}`,
+    );
+
+    if (isDryRun) {
+      this.logger.log(
+        `[DRY RUN] Would update ${itemsToUpdate.length} command menu item expression(s) for workspace ${workspaceId}`,
+      );
+
+      return;
+    }
+
+    const validateAndBuildResult =
+      await this.workspaceMigrationValidateBuildAndRunService.validateBuildAndRunWorkspaceMigration(
+        {
+          allFlatEntityOperationByMetadataName: {
+            commandMenuItem: {
+              flatEntityToCreate: [],
+              flatEntityToDelete: [],
+              flatEntityToUpdate: itemsToUpdate,
+            },
+          },
+          workspaceId,
+          applicationUniversalIdentifier:
+            twentyStandardFlatApplication.universalIdentifier,
+        },
+      );
+
+    if (validateAndBuildResult.status === 'fail') {
+      this.logger.error(
+        `Failed to fix merge command expression:\n${JSON.stringify(validateAndBuildResult, null, 2)}`,
+      );
+
+      throw new Error(
+        `Failed to fix merge command menu item expression for workspace ${workspaceId}`,
+      );
+    }
+
+    this.logger.log(
+      `Successfully updated ${itemsToUpdate.length} command menu item expression(s) for workspace ${workspaceId}`,
+    );
+  }
+}
diff --git a/packages/twenty-server/src/engine/workspace-manager/twenty-standard-application/constants/standard-command-menu-item.constant.ts b/packages/twenty-server/src/engine/workspace-manager/twenty-standard-application/constants/standard-command-menu-item.constant.ts
index b0eaa4bf70..00dea0788c 100644
--- a/packages/twenty-server/src/engine/workspace-manager/twenty-standard-application/constants/standard-command-menu-item.constant.ts
+++ b/packages/twenty-server/src/engine/workspace-manager/twenty-standard-application/constants/standard-command-menu-item.constant.ts
@@ -178,7 +178,7 @@ export const STANDARD_COMMAND_MENU_ITEMS = {
     shortLabel: 'Merge',
     availabilityType: CommandMenuItemAvailabilityType.RECORD_SELECTION,
     conditionalAvailabilityExpression:
-      'numberOfSelectedRecords >= 2 and isDefined(objectMetadataItem.duplicateCriteria) and objectPermissions.canUpdateObjectRecords and objectPermissions.canDestroyObjectRecords and numberOfSelectedRecords <= 9',
+      'not isSelectAll and numberOfSelectedRecords >= 2 and isDefined(objectMetadataItem.duplicateCriteria) and objectPermissions.canUpdateObjectRecords and objectPermissions.canDestroyObjectRecords and numberOfSelectedRecords <= 9',
     availabilityObjectMetadataUniversalIdentifier: null,
     frontComponentUniversalIdentifier: null,
     engineComponentKey: EngineComponentKey.MERGE_MULTIPLE_RECORDS,