Have you looked at all into creating a connector with Frontstream Fundraising Pro? It used to be called Artez Interactive and when we signed our agreement, they talked about how a lot of their customers used ImportOmatic to integrate the data.
OSF Healthcare Foundation
We've certainly heard of Artez, but I don't know that we've seen any requests for it yet. You can see a list of all requested connectors here (please feel free to add Artez/Frontstream Fundraising Pro as well):
Thanks for the input!