fix metadta when changing project

operators/operators.py

@@ -338,7 +338,8 @@ class VSETB_OT_load_projects(Operator):
                asset_type = project.asset_types.add()
                asset_type.name = asset_type_data['name']
         
-            project.set_strip_metadata()
+        if settings.active_project:
+            settings.active_project.set_strip_metadata()
         
         bpy.ops.vse_toolbox.load_assets()
 

properties.py

@@ -45,6 +45,9 @@ def on_project_updated(self, context):
 
     bpy.ops.vse_toolbox.load_assets()
 
+    if settings.active_project:
+        settings.active_project.set_strip_metadata()
+    
 def get_tracker_items(self, context):
     return [(norm_str(a.name, format=str.upper), a.name, "", i) for i, a in enumerate(TRACKERS)]
 
@@ -136,6 +139,14 @@ class Project(PropertyGroup):
     type : StringProperty()
 
     def set_strip_metadata(self):
+        
+        # Clear Metadatas
+        for attr in list(Metadata.__annotations__.keys()):
+            if hasattr(Metadata, attr):
+                delattr(Metadata, attr)
+                del Metadata.__annotations__[attr]
+
+
         for metadata_type in self.metadata_types:
             prop_name = metadata_type.name
             if metadata_type['choices']: