When mounting DLC content (via PCK or ZIP archive) the loading code mounts the files, but does not re-index any global caches (such as .godot/global_script_class_cache.cfg and .godot/uid_cache.bin).

When porting the project to 4.0, I've found a problem when loading external PCK files. It generates a lot of warnings about unknown UID paths: After looking around, it seems this UID information is ...