Nested folders created by XCode


I just finished the Ch 7 HypnoTime app and when I went to do a commit into git, it said I had 483 files! Apparently Xcode can copy old versions into a folder? It seems like a lot of them had similar dates and the latest one was at the top level - so I deleted a bunch and I can still run fine. But any idea what’s causing this?

I’m still using XCode 4.4.1 - I’m worried about having things in the book not line up as well when I go to 4.5