I accidentally saved my multitrack version of 13B over the multitrack of 13A. Sure, I can just paste the two together for future releases, but changes will be a lot more involved. Due to circumstances (I got lazy for a second at the beginning) I had to mixdown before creating the MP3's of both parts of 13 to be able to enter new id tags. I know, also lazy there, as I should have just edited the tags afterwards.
Crap.