diff --git a/api-v3/test/unit/survey-planning-dto.test.ts b/api-v3/test/unit/survey-planning-dto.test.ts
index 4df9a52..7bea745 100644
--- a/api-v3/test/unit/survey-planning-dto.test.ts
+++ b/api-v3/test/unit/survey-planning-dto.test.ts
@@ -1,35 +1,31 @@
-import 'reflect-metadata';
 import assert from 'node:assert/strict';
+import fs from 'node:fs';
+import path from 'node:path';
 import test from 'node:test';
-import { validate } from 'class-validator';
-import { AddSurveyTargetDto } from '../../src/survey-planning/dto/add-survey-target.dto';
-import { CreateSurveyCampaignDto } from '../../src/survey-planning/dto/create-survey-campaign.dto';
 
-const ASSET_ID = '16e54e65-60cf-4739-b0d1-ccdd904fbfd5';
+const root = process.cwd();
+const migration = fs.readFileSync(
+  path.join(root, 'src/database/migrations/1790000300000-f4-remove-survey-subsystem.ts'),
+  'utf8',
+);
 
-test('campaign DTO accepts dynamic asset scope and ISO planning dates', async () => {
-  const dto = Object.assign(new CreateSurveyCampaignDto(), {
-    code: 'REL-2026-001',
-    name: 'Campaña operativa',
-    description: null,
-    plannedStartAt: '2026-08-15T12:00:00.000Z',
-    plannedEndAt: '2026-08-20T12:00:00.000Z',
-    scopeAssetId: ASSET_ID,
-    coordinatorUserId: null,
-  });
-  assert.deepEqual(await validate(dto), []);
+test('F4 removes Survey planning DTOs from the active code surface', () => {
+  assert.equal(fs.existsSync(path.join(root, 'src/survey-planning/dto/create-survey-campaign.dto.ts')), false);
+  assert.equal(fs.existsSync(path.join(root, 'src/survey-planning/dto/add-survey-target.dto.ts')), false);
 });
 
-test('target DTO references an existing Maestro asset instead of copying it', async () => {
-  const dto = Object.assign(new AddSurveyTargetDto(), {
-    assetId: ASSET_ID,
-    assignedUserId: null,
-    dueAt: null,
-    instructions: null,
-  });
-  assert.deepEqual(await validate(dto), []);
+test('F4 drops Survey planning tables after removing their permissions', () => {
+  assert.match(migration, /DELETE FROM permissions/);
+  assert.match(migration, /DROP TABLE IF EXISTS survey_campaign_targets/);
+  assert.match(migration, /DROP TABLE IF EXISTS survey_campaigns/);
+  assert.doesNotMatch(migration, /DROP TABLE IF EXISTS survey_campaigns CASCADE/);
+});
 
-  dto.assetId = 'not-a-uuid';
-  const properties = new Set((await validate(dto)).map((error) => error.property));
-  assert.equal(properties.has('assetId'), true);
+test('F4 rollback can reconstruct historical Survey planning dates and asset references', () => {
+  assert.match(migration, /CREATE TABLE IF NOT EXISTS survey_campaigns/);
+  assert.match(migration, /planned_start_at timestamptz/);
+  assert.match(migration, /planned_end_at timestamptz/);
+  assert.match(migration, /scope_asset_id uuid REFERENCES assets\(id\) ON DELETE RESTRICT/);
+  assert.match(migration, /CREATE TABLE IF NOT EXISTS survey_campaign_targets/);
+  assert.match(migration, /asset_id uuid NOT NULL REFERENCES assets\(id\) ON DELETE RESTRICT/);
 });