I noticed that some, not all, of the steering hinges on one of my machines were flipped after the transition to the multiverse. This kind of thing has happened before occasionally when loading preexisting machines after a version update in the past. After fixing the hinges by pressing F on them and saving the machine, the problem does no reoccur. I therefore consider it a really minor problem, this is more just FYI. I also cannot supply you with the pre-multiverse bsg anymore, as I fixed and saved it without backing up the original. The machine in question was also the only one in my library for which the problem occurred (as far as I could tell with any certainty).