After making some changes to my uv's back in blender, I hit "send uv" and for a while that worked, but after five or six times there's now an afterimage of old UV's - so there are two sets of UV's shown in aseprite's UV layer. Deleting the layer, reconnecting, resending still seems to send two copies of the UV's that are not aligned.

EDIT: Leaving this up in case anyone else runs into it - it seems "Reload All References" cleared it.

Thanks a lot for finding a fix!

Right now scripting those is quite hacky in aseprite, so some real strange things happen. This info actually helps a lot. I was thinking this issue is undo related, and couldn’t reliably reproduce it. Will look into it again now.

Still, I have no idea why Reload All References works, it’s completely unrelated - _ -

I hope I haven't steered you in the wrong direction then, but when I was trying things and reconnecting/syncing that was the last one I tried before it cleared up. If it happens again I'll update!