Nah, we've been over this before. It's because Kinnikuman author got extremely pissed that spoilers were getting posted like crazy in FGO and other cases around that time. Case in point: Oniland had a LB2 requirement and it got rerun with no problem.
As for Christmas 5 rerun, shop is same as original, which is nice for me since I don't really need to buyout the gold section.