Lost training data after El Capitan upgrade

Apologies if this has been posted before, but I just upgraded to El Capitan and SpamSieve is letting all spam through into my email accounts as though all it has learned is gone. El Capitan also screwed my email signature with a linked logo. PAH…! My email addresses some of which obviously have been sold on over and over so it’s now a big job re-training SS. I’m running the latest SS by the way.
Appreciate any help at all, as SS is a fantastic little program.

Most likely, the upgrade messed up the setup in your mail program. So you can just fix that, and the filtering should resume working like normal. All your training data should still be there. Always check the setup before resetting or retraining.

Thank you Michael. I’m on the case and will report back.

EDIT: Seems to be working again, thanks again Michael, much appreciated.