diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index e80f35e1..52302484 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -46,7 +46,7 @@ on:
 env:
   DOCKERHUB_SLUG: arabcoders/watchstate
   GHCR_SLUG: ghcr.io/arabcoders/watchstate
-  PLATFORMS: linux/amd64,linux/arm64,linux/arm
+  PLATFORMS: linux/amd64,linux/arm64
 
 jobs:
   unit-tests:
@@ -90,6 +90,49 @@ jobs:
       - run: composer install --prefer-dist --no-interaction --no-progress
       - run: composer run test
 
+  pr_build_test:
+    needs: unit-tests
+    if: github.event_name == 'pull_request'
+    runs-on: "ubuntu-latest"
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - uses: bahmutov/npm-install@v1
+        with:
+          working-directory: frontend
+          install-command: yarn --production --prefer-offline --frozen-lockfile
+
+      - uses: bahmutov/npm-install@v1
+        with:
+          working-directory: frontend
+          install-command: yarn run generate
+
+      - name: Update Version File
+        uses: arabcoders/write-version-to-file@master
+        with:
+          filename: "/config/config.php"
+          placeholder: "$(version_via_ci)"
+          with_date: "true"
+          with_branch: "true"
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Build and push
+        uses: docker/build-push-action@v5
+        with:
+          platforms: ${{ env.PLATFORMS }}
+          context: .
+          push: false
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha, scope=pr_${{ github.workflow }}
+          cache-to: type=gha, scope=pr_${{ github.workflow }}
+
   publish_docker_images:
     needs: unit-tests
     if: github.event_name == 'push' || (github.event_name == 'workflow_dispatch' && github.event.inputs.build == 'true')
diff --git a/src/Commands/State/SyncCommand.php b/src/Commands/State/SyncCommand.php
index c0fd5b5c..d3a0870a 100644
--- a/src/Commands/State/SyncCommand.php
+++ b/src/Commands/State/SyncCommand.php
@@ -74,6 +74,7 @@ protected function configure(): void
             ->addOption('force-full', 'f', InputOption::VALUE_NONE, 'Force full export. Ignore last export date.')
             ->addOption('dry-run', null, InputOption::VALUE_NONE, 'Do not commit changes to backends.')
             ->addOption('timeout', null, InputOption::VALUE_REQUIRED, 'Set request timeout in seconds.')
+            ->addOption('test', null, InputOption::VALUE_NONE, 'Run on one user only.')
             ->addOption(
                 'select-backend',
                 's',
@@ -102,10 +103,9 @@ protected function configure(): void
 
                     <question>Known limitations</question>
 
-                    We have some known limitations:
-                     * Cannot be used with plex users that have PIN enabled.
-                     * Can Only sync played status.
-                     * Cannot sync play progress.
+                    Known limitations:
+                    * Cannot be used with plex users that have PIN enabled.
+                    * Cannot sync play progress.
 
                     Some or all of these limitations will be fixed in future releases.
 
@@ -193,6 +193,13 @@ protected function process(iInput $input, iOutput $output): int
                 continue;
             }
 
+            if (true !== (bool)ag($backend, 'import.enabled')) {
+                $this->logger->info("SYSTEM: Ignoring '{backend}' as the backend has import disabled.", [
+                    'backend' => $backendName
+                ]);
+                continue;
+            }
+
             if (true !== (bool)ag($backend, 'export.enabled')) {
                 $this->logger->info("SYSTEM: Ignoring '{backend}' as the backend has export disabled.", [
                     'backend' => $backendName
@@ -272,6 +279,7 @@ protected function process(iInput $input, iOutput $output): int
             $this->logger->info("SYSTEM: Getting users from '{backend}'.", [
                 'backend' => $client->getContext()->backendName
             ]);
+
             try {
                 foreach ($client->getUsersList(['tokens' => true]) as $user) {
                     $info = $backend;
@@ -325,27 +333,54 @@ protected function process(iInput $input, iOutput $output): int
             'results' => arrayToString($this->usersList($users)),
         ]);
 
-        foreach (array_reverse($users) as $user) {
+        foreach (($input->getOption('test') ? array_reverse($users) : $users) as $user) {
+            $this->queue->reset();
+
             $userName = ag($user, 'name', 'Unknown');
             $perUserCache = perUserCacheAdapter($userName);
+            $this->logger->info("SYSTEM: Loading user mapper data.");
             $perUserMapper = perUserMapper($this->mapper, $userName)
                 ->withCache($perUserCache)
                 ->withLogger($this->logger)->loadData();
+            $this->logger->info("SYSTEM: Load user mapper data complete.");
 
-            $this->queue->reset();
 
             $list = [];
             $displayName = null;
 
+            $configFile = ConfigFile::open(r(fixPath(Config::get('path') . '/users/{user}/servers.yaml'), [
+                'user' => $userName
+            ]), 'yaml', autoSave: true, autoCreate: true);
+            $configFile->setLogger($this->logger);
+
             foreach (ag($user, 'backends', []) as $backend) {
                 $name = ag($backend, 'client_data.backendName');
                 $clientData = ag($backend, 'client_data');
                 $clientData['name'] = $name;
+
+                if (false === $configFile->has($name)) {
+                    $data = $clientData;
+                    $data = ag_set($data, 'import.lastSync', null);
+                    $data = ag_set($data, 'export.lastSync', null);
+                    $data = ag_delete($data, ['webhook', 'name', 'backendName', 'displayName']);
+                    $configFile->set($name, $data);
+                } else {
+                    $clientData = ag_delete($clientData, 'import.lastSync');
+                    $clientData = ag_delete($clientData, 'export.lastSync');
+                    $clientData = array_replace_recursive($configFile->get($name), $clientData);
+                }
+
                 $clientData['class'] = makeBackend($clientData, $name, [
                     BackendCache::class => Container::get(BackendCache::class)->with(adapter: $perUserCache)
                 ])->setLogger($this->logger);
+
                 $list[$name] = $clientData;
                 $displayName = ag($backend, 'client_data.displayName', '??');
+
+                if (false === $input->getOption('dry-run')) {
+                    $configFile->set("{$name}.import.lastSync", time());
+                    $configFile->set("{$name}.export.lastSync", time());
+                }
             }
 
             $start = makeDate();
@@ -356,7 +391,7 @@ protected function process(iInput $input, iOutput $output): int
             ]);
 
             assert($perUserMapper instanceof iEImport);
-            $this->handleImport($perUserMapper, $displayName, $list);
+            $this->handleImport($perUserMapper, $displayName, $list, $input->getOption('force-full'), $configFile);
 
             assert($perUserMapper instanceof MemoryMapper);
             /** @var MemoryMapper $changes */
@@ -401,21 +436,37 @@ protected function process(iInput $input, iOutput $output): int
                     'peak' => getPeakMemoryUsage(),
                 ],
             ]);
-            exit(1);
+
+
+            if ($input->getOption('test')) {
+                break;
+            }
         }
 
         return self::SUCCESS;
     }
 
-    protected function handleImport(iEImport $mapper, string $name, array $backends): void
-    {
+    protected function handleImport(
+        iEImport $mapper,
+        string $name,
+        array $backends,
+        bool $isFull,
+        ConfigFile $config
+    ): void {
         /** @var array<array-key,ResponseInterface> $queue */
         $queue = [];
 
         foreach ($backends as $backend) {
             /** @var iClient $client */
             $client = ag($backend, 'class');
-            array_push($queue, ...$client->pull($mapper));
+            $context = $client->getContext();
+            $after = ag($context->options, Options::FORCE_FULL) || $isFull ? null : $config->get(
+                $context->backendName . '.import.lastSync'
+            );
+            if (null !== $after) {
+                $after = makeDate($after);
+            }
+            array_push($queue, ...$client->pull(mapper: $mapper, after: $after));
         }
 
         $start = makeDate();
@@ -580,7 +631,7 @@ private function generate_users_list(array $users, array $map = []): array
          *   'backends' => [
          *     'backend1' => userObj,
          *     'backend2' => userObj,
-         *     ...
+         *     ...,
          *   ]
          * ]
          * </code>
diff --git a/src/Libs/helpers.php b/src/Libs/helpers.php
index a94871e3..e31a1dbf 100644
--- a/src/Libs/helpers.php
+++ b/src/Libs/helpers.php
@@ -254,13 +254,20 @@ function ag_exists(array $array, string|int $path, string $separator = '.'): boo
      * Delete given key path.
      *
      * @param array $array The array to search in.
-     * @param int|string $path The key path to delete.
+     * @param int|string|array $path The key path to delete.
      * @param string $separator The separator used in the key path (default is '.').
      *
      * @return array The modified array.
      */
-    function ag_delete(array $array, string|int $path, string $separator = '.'): array
+    function ag_delete(array $array, string|int|array $path, string $separator = '.'): array
     {
+        if (is_array($path)) {
+            foreach ($path as $key) {
+                $array = ag_delete($array, $key, $separator);
+            }
+            return $array;
+        }
+
         if (array_key_exists($path, $array)) {
             unset($array[$path]);