Can I change what fbx a file references as source without reimporting (in python)?

I know how to get the source fbx, via


What I really need is to edit the paths because when renaming an asset, I’m renaming the source content too and want re-import to continue to function, but don’t want to lose all the time if I were to re-import just to get the new path set.

I’d like to know the same thing, it’s the last missing part of my renaming tools.