When I moved to Moneydance, I mostly started from scratch. The only items I imported or manually entered was for investments. It's been a few years, so I don't remember if I did this from scratch or used some of the imported data from Quicken.
I tried to import all of my Quicken data, but it wasn't clean and I didn't want to spend the time reconciling all the transaction/accounts.
i suppose there would be no reason to import years of transaction, would there?
I could access old information, if ever needed, just by keeping the old Q program on the old machine, and accessing if needed. However, then I'd need to keep the old machine around....not loving that idea either.