Bit of help please

I am playing back a song I saved using "standard drum kit" and whilst it is playing I changed the drum section to "jazz drums".
I think this sounds better so want to overide the existing saved song with this new arrangement.

I've tried File \ "save song with patches and harmony" but this didnt seem to work as when I opened the song again it was back to the original "standard drum kit"

Whats the best way

Phil