Bob Motyl KK6KMU
If you don't mind this is what I do. I upload my PSK31 contacts when I feel like it. Not necessarily after a contest or every month. Whatever feels right to you.
Yes you upload only you PSK31 contacts, and yes you upload all you PSK31 contacts, (the ones that were uploaded before.)
I have all my contacts in one log that I can filter for PSK31 contacts only. Then I export those filtered contact to a file.
Actually you only need to upload before the endorsements are mailed out. Right now that is twice a year.
I hope this helps.