Why does Unity editor reimport everything upon save project?

Questions & Answers
1

I’ve noticed that when I quit Unity editor and save my project, it always reimports every model/asset. I know this for certain as I have my own FBXimport script attached to the PostModel Processing (to fix scale and animation etc.) and this script logs every change/import in the console.

Is this normal behaviour or do I have to look for some kinda setting/mistake on my machine?

2

If your asset post processor is modifying the assets, that will in itself cause that. I do the same thing (for the same reason, I suspect), but I save the animations as a new asset. I don’t see the problem you see, but I used to when I was doing that post process differently (
I don’t recall exact details, sorry).