Ok, I understand now. Sorry, maybe I didn't read your first post carefully.
LOGic isn't certificate-aware. It just makes an ADIF file, and shells out to the ARRL TQSL program. THAT would certificate-aware I would think.
Does it prompt for a STATION LOCATION? Is your old call included there? I'm now thinking the question becomes "How do you install an additional certificate in TQSL? Try running TQSL and clicking on STATION, then add a new station.
Check this out. I doubt it tells you anything you don't already know, however:
http://hosenose.com/Foru...ing-LoTW-and-LOGic.aspx
Let me know.
Tnx & 73,
Dennis WN4AZY