Hello Larry,
It's hard to envision the problem as Logbook Pro sorts by Flight Date, but it sounds like you know what's going on. I don't know how to really resolve this type of issue as Logbook Pro can only report on the data in the query from the database. How would it know what totals to carry forward? You would have to have that entered somewhere. Please see this
KB article and see if it helps you any in your situation. The only other option is to get those old logs entered into Logbook Pro and as I know you don't want to do that, maybe you'll let us do it for you? We offer a data entry service which you may not be aware of. Please scroll to the bottom of our Logbook Pro
home page for more information. Hopefully we can come up with a solution to help you.