Ok.
I see how this works. First, what I want to clarify, is that I should sync all data and then go back and manually change new tail numbers to the correct aircraft type. So, in the future this tail number will be correctly entered when I sync from that entry? No need for dummy entries to get the correct aircraft type?
My suggestion for duplicates is that LBP would see same day, departure, arrival, tail number, duration, any instrument or nite and whether PF or PNF and flag the entry as a duplicate for you to verify. If all these parameters don't match no duplicate. If in the extremely rare instance where you fly the same tail number the same duration and same city pairs LBP should just give you a message stating possible duplication entry and ask for you to verify. My situation seems easy. I manuually entered the data for a 4 day trip. A week later I synced and the same data was written. I'm no programmer but it seems like a simple " if then" code. In your suggestion same tail 3 times in one day should all be synced at once. It should not be synced as new data twice. Hope this helps. I know you strive to make the best product possible.
Tyler