diff --git a/app/Console/Commands/ImportLegacyData.php b/app/Console/Commands/ImportLegacyData.php
index ca0ef200..80a3070d 100644
--- a/app/Console/Commands/ImportLegacyData.php
+++ b/app/Console/Commands/ImportLegacyData.php
@@ -12,6 +12,7 @@ use App\Services\Import\PressReleaseImporter;
 use App\Services\Import\UserAssociationLinker;
 use App\Services\Import\UserImporter;
 use Illuminate\Console\Command;
+use Illuminate\Support\Carbon;
 
 /**
  * Legacy-Import-Master-Command (Phase 6 – Datenmigration).
@@ -22,6 +23,7 @@ use Illuminate\Console\Command;
  *   php artisan legacy:import --source=all --step=categories
  *   php artisan legacy:import --source=all --step=link-associations  ← NEU
  *   php artisan legacy:import --source=presseecho --force
+ *   php artisan legacy:import --source=presseecho --since=today --force  ← Delta: nur heute Angelegtes/Geändertes
  *
  * Schritte (--step):
  *   categories        – Kategorien + Translations (einmalig, beide Portale identisch)
@@ -39,6 +41,7 @@ class ImportLegacyData extends Command
                             {--step=all : Schritt (categories|users|companies|contacts|press-releases|link-associations|all)}
                             {--dry-run : Nichts schreiben, nur zählen}
                             {--force : Bereits importierte Datensätze erneut verarbeiten}
+                            {--since= : Nur Legacy-Zeilen mit created_at/updated_at ab diesem Zeitpunkt (z. B. "2026-07-20", "today"); für Updates mit --force kombinieren}
                             {--chunk-size=500 : Batch-Größe (Debugging)}';
 
     protected $description = 'Legacy-Daten aus Presseecho / Businessportal24 in die neue DB importieren.';
@@ -61,9 +64,29 @@ class ImportLegacyData extends Command
         $isDryRun = (bool) $this->option('dry-run');
         $isForce = (bool) $this->option('force');
 
+        $since = null;
+
+        if (filled($this->option('since'))) {
+            try {
+                $since = Carbon::parse((string) $this->option('since'), config('app.timezone'));
+            } catch (\Throwable) {
+                $this->error('Ungültiger --since-Wert: '.$this->option('since'));
+
+                return self::FAILURE;
+            }
+        }
+
         $portals = $source === 'all' ? self::PORTALS : [$source];
         $steps = $step === 'all' ? self::STEPS : [$step];
 
+        if ($since) {
+            $this->info('Delta-Modus: nur Legacy-Zeilen mit created_at/updated_at ab '.$since->format('d.m.Y H:i:s').'.');
+
+            if (! $isForce) {
+                $this->warn('Hinweis: ohne --force werden im Zeitfenster GEÄNDERTE, bereits importierte Datensätze übersprungen — nur Neue kommen dazu.');
+            }
+        }
+
         if (! $isDryRun && ! $this->option('force')) {
             $this->warn('WICHTIG: Dieser Command schreibt Daten in die Produktions-DB.');
             $this->line('  Portale: '.implode(', ', $portals));
@@ -86,7 +109,7 @@ class ImportLegacyData extends Command
         foreach ($steps as $currentStep) {
             // link-associations arbeitet auf der neuen DB → einmalig, portal-unabhängig
             if ($currentStep === 'link-associations') {
-                $ctx = new ImportContext('all', $isDryRun, $isForce);
+                $ctx = new ImportContext('all', $isDryRun, $isForce, $since);
                 $this->info('▶ Schritt [link-associations] (beide Portale, neue DB)');
                 $start = microtime(true);
                 $result = app(UserAssociationLinker::class)->run($ctx);
@@ -100,7 +123,7 @@ class ImportLegacyData extends Command
             $stepPortals = ($currentStep === 'categories') ? [$portals[0]] : $portals;
 
             foreach ($stepPortals as $portal) {
-                $ctx = new ImportContext($portal, $isDryRun, $isForce);
+                $ctx = new ImportContext($portal, $isDryRun, $isForce, $since);
 
                 $this->info("▶ Schritt [{$currentStep}] Portal [{$portal}]");
                 $start = microtime(true);
diff --git a/app/Services/Import/CompanyImporter.php b/app/Services/Import/CompanyImporter.php
index f025311b..c0003061 100644
--- a/app/Services/Import/CompanyImporter.php
+++ b/app/Services/Import/CompanyImporter.php
@@ -43,6 +43,10 @@ class CompanyImporter
 
         DB::connection($conn)
             ->table('company')
+            ->when($ctx->since, fn ($query) => $query->where(function ($window) use ($ctx): void {
+                $window->where('created_at', '>=', $ctx->since)
+                    ->orWhere('updated_at', '>=', $ctx->since);
+            }))
             ->orderBy('id')
             ->chunk(self::CHUNK_SIZE, function ($rows) use ($ctx, $result, $legacyPortal, $portal, $responsibles, $members): void {
                 foreach ($rows as $row) {
@@ -117,12 +121,17 @@ class CompanyImporter
                     'logo_path' => $row->logo ?: null,
                     'is_active' => (bool) $row->is_active,
                     'disable_footer_code' => (bool) ($row->disable_footer_code ?? false),
-                    'created_at' => $row->created_at ?? now(),
-                    'updated_at' => $row->updated_at ?? $row->created_at ?? now(),
                 ]
             );
         });
 
+        // created_at/updated_at sind nicht fillable und würden von updateOrCreate
+        // verworfen → explizit per forceFill setzen (Muster PressReleaseImporter).
+        $company->forceFill([
+            'created_at' => $row->created_at ?? now(),
+            'updated_at' => $row->updated_at ?? $row->created_at ?? now(),
+        ])->save();
+
         // Pivot-Zuordnungen (member + responsible)
         $pivotPayload = [];
 
diff --git a/app/Services/Import/ContactImporter.php b/app/Services/Import/ContactImporter.php
index 12b0d61d..f728ab27 100644
--- a/app/Services/Import/ContactImporter.php
+++ b/app/Services/Import/ContactImporter.php
@@ -20,6 +20,10 @@ class ContactImporter
 
         DB::connection($conn)
             ->table('contact')
+            ->when($ctx->since, fn ($query) => $query->where(function ($window) use ($ctx): void {
+                $window->where('created_at', '>=', $ctx->since)
+                    ->orWhere('updated_at', '>=', $ctx->since);
+            }))
             ->orderBy('id')
             ->chunk(self::CHUNK_SIZE, function ($rows) use ($ctx, $result, $legacyPortal, $portal): void {
                 foreach ($rows as $row) {
@@ -93,12 +97,17 @@ class ContactImporter
                     'phone' => $this->cleanText($row->phone, 255),
                     'fax' => $this->cleanText($row->fax, 255),
                     'email' => $this->cleanText($row->email, 190),
-                    'created_at' => $row->created_at ?? now(),
-                    'updated_at' => $row->updated_at ?? $row->created_at ?? now(),
                 ]
             );
         });
 
+        // created_at/updated_at sind nicht fillable und würden von updateOrCreate
+        // verworfen → explizit per forceFill setzen (Muster PressReleaseImporter).
+        $contact->forceFill([
+            'created_at' => $row->created_at ?? now(),
+            'updated_at' => $row->updated_at ?? $row->created_at ?? now(),
+        ])->save();
+
         LegacyImportMap::query()->updateOrCreate(
             [
                 'legacy_portal' => $legacyPortal,
diff --git a/app/Services/Import/ImportContext.php b/app/Services/Import/ImportContext.php
index 1e3a6489..911d7f66 100644
--- a/app/Services/Import/ImportContext.php
+++ b/app/Services/Import/ImportContext.php
@@ -3,9 +3,14 @@
 namespace App\Services\Import;
 
 use App\Enums\Portal;
+use Illuminate\Support\Carbon;
 
 /**
  * Hält den Kontext für einen Import-Lauf.
+ *
+ * `since` schränkt den Quell-Scan auf Legacy-Zeilen ein, deren
+ * created_at ODER updated_at ab dem Stichtag liegt (Delta-Läufe) —
+ * Kategorien und link-associations bleiben davon unberührt.
  */
 final class ImportContext
 {
@@ -17,6 +22,7 @@ final class ImportContext
         public readonly string $portal, // 'presseecho' | 'businessportal24' | 'all'
         public readonly bool $dryRun = false,
         public readonly bool $force = false,
+        public readonly ?Carbon $since = null,
     ) {
         if ($portal === 'all') {
             $this->portalEnum = null;
diff --git a/app/Services/Import/PressReleaseImporter.php b/app/Services/Import/PressReleaseImporter.php
index b56bf181..de099eea 100644
--- a/app/Services/Import/PressReleaseImporter.php
+++ b/app/Services/Import/PressReleaseImporter.php
@@ -44,6 +44,10 @@ class PressReleaseImporter
 
         DB::connection($conn)
             ->table('press_release')
+            ->when($ctx->since, fn ($query) => $query->where(function ($window) use ($ctx): void {
+                $window->where('created_at', '>=', $ctx->since)
+                    ->orWhere('updated_at', '>=', $ctx->since);
+            }))
             ->orderBy('id')
             ->chunk(self::CHUNK_SIZE, function ($rows) use ($ctx, $result, $legacyPortal, $portal, $images, $prContacts): void {
                 foreach ($rows as $row) {
diff --git a/app/Services/Import/UserImporter.php b/app/Services/Import/UserImporter.php
index 7baf2449..ece7c6c2 100644
--- a/app/Services/Import/UserImporter.php
+++ b/app/Services/Import/UserImporter.php
@@ -92,6 +92,10 @@ class UserImporter
                 'sf_guard_user_profile.tax_exempt_reason',
                 'sf_guard_user_profile.disable_footer_code',
             ])
+            ->when($ctx->since, fn ($query) => $query->where(function ($window) use ($ctx): void {
+                $window->where('sf_guard_user.created_at', '>=', $ctx->since)
+                    ->orWhere('sf_guard_user.updated_at', '>=', $ctx->since);
+            }))
             ->orderBy('sf_guard_user.id')
             ->chunk(self::CHUNK_SIZE, function ($rows) use ($ctx, $result, $portal, $legacyPortal, $userGroups): void {
                 foreach ($rows as $row) {
@@ -163,15 +167,18 @@ class UserImporter
                     'last_login_ip' => $row->ip_address ?: null,
                     'legacy_portal' => $legacyPortal,
                     'legacy_id' => $row->legacy_id,
-                    'created_at' => $row->created_at ?? now(),
-                    'updated_at' => $row->updated_at ?? $row->created_at ?? now(),
                     // Kein Passwort – User erhält Go-Live-Reset-Mail (D-09)
                 ]
             );
 
-            // is_super_admin ist nicht mass-assignable (siehe User::$fillable) –
-            // im vertrauenswürdigen Import explizit per forceFill setzen.
-            $user->forceFill(['is_super_admin' => (bool) $row->is_super_admin])->save();
+            // is_super_admin und die Timestamps sind nicht mass-assignable und
+            // würden von updateOrCreate verworfen – im vertrauenswürdigen Import
+            // explizit per forceFill setzen (Muster PressReleaseImporter).
+            $user->forceFill([
+                'is_super_admin' => (bool) $row->is_super_admin,
+                'created_at' => $row->created_at ?? now(),
+                'updated_at' => $row->updated_at ?? $row->created_at ?? now(),
+            ])->save();
 
             return $user;
         });
diff --git a/tests/Feature/LegacyPressReleaseDateImportTest.php b/tests/Feature/LegacyPressReleaseDateImportTest.php
index fa686854..96de8b59 100644
--- a/tests/Feature/LegacyPressReleaseDateImportTest.php
+++ b/tests/Feature/LegacyPressReleaseDateImportTest.php
@@ -8,6 +8,7 @@ use App\Models\User;
 use App\Services\Import\ImportContext;
 use App\Services\Import\PressReleaseImporter;
 use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Carbon;
 use Illuminate\Support\Facades\Config;
 use Illuminate\Support\Facades\DB;
 use Illuminate\Support\Facades\Schema;
@@ -178,3 +179,64 @@ test('a force re-import preserves the uuid and the publication date', function (
     expect($second->uuid)->toBe($originalUuid);
     expect($second->published_at?->format('Y-m-d H:i:s'))->toBe('2009-04-08 15:43:42');
 });
+
+test('a since delta only scans legacy rows created or updated in the window', function () {
+    /** @var TestCase $this */
+    seedLegacyPressReleaseSchema();
+
+    DB::connection('mysql_presseecho')->table('press_release')->insert([
+        [
+            'id' => 20,
+            'title' => 'Alte unveränderte Meldung',
+            'language' => 'de',
+            'text' => 'Inhalt',
+            'category_id' => 500,
+            'user_id' => 700,
+            'status' => 'published',
+            'no_export' => false,
+            'created_at' => '2019-05-01 08:00:00',
+            'updated_at' => '2019-05-01 08:00:00',
+            'slug' => 'alt-unveraendert',
+        ],
+        [
+            'id' => 21,
+            'title' => 'Heute neu angelegt',
+            'language' => 'de',
+            'text' => 'Inhalt',
+            'category_id' => 500,
+            'user_id' => 700,
+            'status' => 'published',
+            'no_export' => false,
+            'created_at' => '2026-07-20 09:00:00',
+            'updated_at' => '2026-07-20 09:00:00',
+            'slug' => 'heute-neu',
+        ],
+        [
+            'id' => 22,
+            'title' => 'Alt, aber heute geändert',
+            'language' => 'de',
+            'text' => 'Inhalt',
+            'category_id' => 500,
+            'user_id' => 700,
+            'status' => 'published',
+            'no_export' => false,
+            'created_at' => '2012-01-15 10:00:00',
+            'updated_at' => '2026-07-20 10:30:00',
+            'slug' => 'alt-heute-geaendert',
+        ],
+    ]);
+
+    app(PressReleaseImporter::class)->run(new ImportContext(
+        'presseecho',
+        false,
+        true,
+        Carbon::parse('2026-07-20 00:00:00'),
+    ));
+
+    $imported = PressRelease::withoutGlobalScopes()
+        ->where('legacy_portal', 'presseecho')
+        ->whereIn('legacy_id', [20, 21, 22])
+        ->pluck('legacy_id')->sort()->values()->all();
+
+    expect($imported)->toBe([21, 22]);
+});
diff --git a/tests/Feature/LegacyUserProfileImportTest.php b/tests/Feature/LegacyUserProfileImportTest.php
index a1049e2c..bd0c9462 100644
--- a/tests/Feature/LegacyUserProfileImportTest.php
+++ b/tests/Feature/LegacyUserProfileImportTest.php
@@ -127,6 +127,11 @@ test('legacy user import creates linked profile data from sf guard user profile'
     expect($user->profile?->tax_exempt)->toBeTrue();
     expect($user->profile?->tax_exempt_reason)->toBe('Reverse Charge');
     expect($user->profile?->disable_footer_code)->toBeTrue();
+
+    // Timestamps kommen aus dem Legacy-System, nicht vom Importzeitpunkt
+    // (created_at/updated_at sind nicht fillable → forceFill im Importer).
+    expect($user->created_at?->format('Y-m-d H:i:s'))->toBe('2020-01-01 00:00:00');
+    expect($user->updated_at?->format('Y-m-d H:i:s'))->toBe('2020-01-02 00:00:00');
 });
 
 /**