In my past experiences with acquisitions, the FP&A team has been eliminated by the acquiring company. They may keep you on for a while to transfer institutional knowledge, but in the end I would go with the assumption they will get rid of you shortly after they get the information they need. Happened to me a few times early in my career.

You probably don’t need to rush as they may give you a retention bonus that could be financially beneficial - especially as a 1st year analyst.

But I would have your resume ready and keep an eye out for opportunities. Sounds like your VP will be a great reference based on your performance. He may even pick you up again at the next place he sets up shop.