I have a scene full of objects that won't export properly (I need either FBX or Obj, it's for Unity but that's irrelevant). After a lot of work I've been able to narrow down the problem to the fact that those objects are not being properly counted.. (see picture, objects counts 0..) The objects that are being counted export fine. :(

Any idea what is wrong with those objects?...

I have a work-around: joining a problematic object to a working object, and then separating them again, but there are dozens of objects in that scene, it would take me days to fix all this like that.

Any help would be very welcome. :(