diff --git a/py/config.py b/py/config.py
index 6bbf8ba3..b5ad1e49 100644
--- a/py/config.py
+++ b/py/config.py
@@ -194,6 +194,8 @@ class GalleryConfig:
 
     Attributes:
         MONITORING_ENABLED (bool): Enable/disable automatic image monitoring
+        SAVE_FOREIGN_RUNS (bool): The monitor stores the certain prompt of an
+            output whose workflow has no PromptManager node (#247)
         MONITORING_DIRECTORIES (List[str]): Directories to monitor for new images
         SUPPORTED_EXTENSIONS (List[str]): Image file extensions to process
         PROCESSING_DELAY (float): Delay in seconds before processing new files
@@ -210,6 +212,8 @@ class GalleryConfig:
 
     # Image monitoring settings
     MONITORING_ENABLED = True
+    # Read by the monitor for every file, so a save applies without a restart
+    SAVE_FOREIGN_RUNS = True
     MONITORING_DIRECTORIES = []  # Auto-detect if empty
     SUPPORTED_EXTENSIONS = [".png", ".jpg", ".jpeg", ".webp", ".gif"]
     PROCESSING_DELAY = 2.0  # Seconds to wait before processing new files
@@ -251,6 +255,7 @@ class GalleryConfig:
         return {
             "monitoring": {
                 "enabled": cls.MONITORING_ENABLED,
+                "save_foreign_runs": cls.SAVE_FOREIGN_RUNS,
                 "directories": cls.MONITORING_DIRECTORIES,
                 "extensions": cls.SUPPORTED_EXTENSIONS,
                 "processing_delay": cls.PROCESSING_DELAY,
@@ -303,6 +308,14 @@ class GalleryConfig:
                 config_logger.warning(
                     "Ignoring gallery monitoring enabled: expected true or false"
                 )
+        if "save_foreign_runs" in monitoring:
+            if isinstance(monitoring["save_foreign_runs"], bool):
+                cls.SAVE_FOREIGN_RUNS = monitoring["save_foreign_runs"]
+            else:
+                config_logger.warning(
+                    "Ignoring gallery monitoring save_foreign_runs: expected true "
+                    "or false"
+                )
         if "directories" in monitoring:
             directories = cls._validated_directories(monitoring["directories"])
             if directories is not None:
diff --git a/tests/test_config.py b/tests/test_config.py
index d099bd60..f2d9a353 100644
--- a/tests/test_config.py
+++ b/tests/test_config.py
@@ -59,6 +59,28 @@ class TestGalleryConfig(unittest.TestCase):
         self.assertFalse(GalleryConfig.MONITORING_ENABLED)
         self.assertEqual(GalleryConfig.PROCESSING_DELAY, 5.0)
 
+    def test_save_foreign_runs_defaults_on_and_only_booleans_apply(self):
+        """#247: gallery.monitoring.save_foreign_runs, default true."""
+        self.assertIs(
+            GalleryConfig.get_config()["monitoring"]["save_foreign_runs"], True
+        )
+        GalleryConfig.update_config({"monitoring": {"save_foreign_runs": False}})
+        self.assertIs(GalleryConfig.SAVE_FOREIGN_RUNS, False)
+        for junk in ("true", 1, None):
+            with self.subTest(value=junk):
+                with self.assertLogs("prompt_manager.config", "WARNING") as logs:
+                    GalleryConfig.update_config(
+                        {"monitoring": {"save_foreign_runs": junk}}
+                    )
+                self.assertIn(
+                    "Ignoring gallery monitoring save_foreign_runs: expected true "
+                    "or false",
+                    "\n".join(logs.output),
+                )
+                self.assertIs(GalleryConfig.SAVE_FOREIGN_RUNS, False)
+        GalleryConfig.update_config({"monitoring": {"save_foreign_runs": True}})
+        self.assertIs(GalleryConfig.SAVE_FOREIGN_RUNS, True)
+
     def test_update_tracking(self):
         GalleryConfig.update_config({"tracking": {"prompt_timeout": 300}})
         self.assertEqual(GalleryConfig.PROMPT_TIMEOUT, 300)