Oh yeah I understand the difference between them. I more meant that you will have it saying memory references exist when you actually are referencing them in Editor windows (like the mesh or window) whereas when you have closed them it still caches the memory references.
Well as I say I avoid using Force Delete as I don’t want to be in the habit of using it so as to avoid accidentally doing it when there are actual references that will break things. In terms of the Editor freaking out, I more meant in the sense that the Editor isn’t always 100% stable (have been many things that have caused it to crash in the past; I have had blueprints become corrupt for no reason in much earlier version ~4.10) so I was more meaning I don’t want to risk doing something that may (however unlikely) result in undesirable effects to the Editor.