Cannot copy file

We transferred from Collab over to Git when our team grew but since we've downsized we want to move back to Collab.

I tried just reactivating it but it wanted me to re-pull all of the old pushes. Thought that might be a nightmare of conflicts so I thought I'd just unlink the project and create a new ID for it. Seemed like a genius move but now that I'm trying to do the initial push it's giving me the "Cannot copy file" error in Collab.

After some research I found that deleting the snapshot works for some so I tried that but it's still giving me that error. Any other ideas? If there's a better method of going from Git back to Collab, I'm all ears as well.