I think they are correct. I assume you are using their transaction manager or what ever it is called. That is BOI driven using the UDF that should all port over. When my client went from 2016 to 2017, it took maybe an hour to switch things over. You might budget more than an hour but I think they are correct. The question might be to ask about how they are handling the increased address length....
------------------------------
Jeff Schwenk
FORMER 90M Board Member
Bottomline Software, Inc.
Waynesboro VA
540-221-4444
------------------------------