Sentient Play

I frequently have the same or a similar problem. It mostly happens when a tool/plugin/package requires me to delete and reinstall it in order to upgrade. This is because Unity doesn't do proper package management / updates and can't remove bogus/outdated files. The challenge is that often this is HUNDREDS of files that are marked as added and deleted when most of them haven't changed at all. Sometimes the Search Matches option is completely greyed out. This week I updated one package (UMotion) and it specified you need to delete and reinstall it. After doing so, Plastic detected some of the files as changed. The files that hadn't changed were mostly thought by Plastic to be separate files that were added and deleted. The weirdest part: doing Search Matches was allowed on the added files detected but would never find the exact same file in the Deleted list but...turning matching down to 0% would show other random possible matches but NEVER THE ACTUAL SAME FILE WITH THE SAME NAME IN THE SAME FOLDER. What evil sorcery is this?

Frequently when working in Unity with the plastic plugin (especially working in prefabs) I will get errors about items that don't exist. The items are sometimes other prefabs that have been renamed/moved/deleted that had referenced/included the gameobjects that I'm editing. Sometimes it's the prefab that I'm inside of.