How can I create a patch that contains only changed assets?

I have tested -generatepatch feature using sample-map(ThirdPersionMap).

I didn’t changed anything from release version, but patch data created.

I checked _P.pak file by UnrealPak.

I found ShaderArchive and uexp(WorldPartition Level).

When I change some assets, the updated assets are properly included in the patch, but those assets are not deleted and remain in the patch.

I don’t want these to be included in the patch, how do I do that?

why I can’t delete my post?