Well, this seems to be working fine for me now. At least, I am able to load mid-battle saves for campaign and resource missions. Sometimes it takes a really long time and it looks like the progress bar is stuck, but this doesn't seem to be an issue for me anymore.

I'm having this exact problem -- loading screen getting stuck at around 95% when attempting to load a game that was saved in the middle of a battle. To answer your questions: 1) Yes I'm using the Reinforcement Pack DLC 2) In-battle saves won't load. Saves from the war room load just fine. 3) The pro...