Hi repetedj,
if it is not too much for you, you could replace(copy and paste) the audio drums of that style with similar midi drums from another style and re-record the song with your new saved style.
Each part replacement should be done individually:
Style A,Main A, drums 1 copy to Style B,Main A, drums 1
Style A,Fill in A, drums 1 copy to Style B,Fill in A, drums 1
etc.
Style Creator, style Assembly video for Tyros/PSR S/A 3000:
https://www.youtube.com/watch?v=ZgGatUmhVqw&t=2sJust in case you cannot find the exact midi style.