updated old legacy store names

cmdlet/file/trim.py

@@ -14,6 +14,7 @@ from urllib.parse import urlparse
 from SYS.logger import log, debug
 from SYS.item_accessors import get_store_name
 from SYS.utils import sha256_file
+from PluginCore.backend_registry import BackendRegistry
 from .. import _shared as sh
 
 Cmdlet = sh.Cmdlet
@@ -166,8 +167,8 @@ def _persist_alt_relationship(
 ) -> None:
     """Persist directional alt -> king relationship in the given backend."""
     try:
-        store = Store(config)
-        backend: Any = store[str(store_name)]
+        backend_registry = BackendRegistry(config)
+        backend: Any = backend_registry[str(store_name)]
     except Exception:
         return