Hello npc,
As Fredo mentioned the files will be aligned with each other, just off from reality by some amount. You can open the files in Nuendo 5.5.? (forgot version which added that), but keep in mind they will be at the same locations as they were on the NLive timeline. If you’re not chasing code then you’ll be fine.
The other seemingly rare issue that Tom and I have both experienced and thoroughly documented, dropped samples in long recordings, may bite you. It’s possible it won’t happen, or if it happens the dropped samples will be very short so you may not notice. If you later have to sync to video then things won’t match on long files.
Hugh