### Godot version

v4.0.beta.custom_build [0a9e6e478]

### System information

Windows 10, Vulkan, GTX 960 528.24

### Issue description

This [55420](https://github.com/godotengine/godot/issues/55420) issue seems that it is not completely solved since in the advanced importer the same thing continues to happen.

### Steps to reproduce

- Put a 3D model on the scene
- Open the advanced import
- Disable Auto LOD or whatever you want to change
- See how mesh doesn't change

### Minimal reproduction project

N/A
switch (p_what) {
		case NOTIFICATION_EXIT_TREE: {
			Thread &active_thread = thread.is_started() ? thread : thread_sources;
			if (use_threads && active_thread.is_started()) {
				while (scanning) {
					OS::get_singleton()->delay_usec(1000);
				}
				active_thread.wait_to_finish();
				WARN_PRINT("Scan thread aborted...");
				set_process(false);
			}
			if (filesystem) {
				memdelete(filesystem);
			}
			if (new_filesystem) {
				memdelete(new_filesystem);
			}
			filesystem = nullptr;
			new_filesystem = nullptr;
		} break;
		case NOTIFICATION_PROCESS: {
			if (use_threads) {
				if (scanning_changes) {
					if (scanning_changes_done) {
						scanning_changes = false;
						set_process(false);
						thread_sources.wait_to_finish();
						bool changed = _update_scan_actions();