revoicing midi files!!

[musicman100]

This is working well on the genos 2 and it is great to use the slider to do a midi mix down to wave!! BUT........... what is it when I try to change the drum voice it immediatly goes back to the original. I have a way around it by deleted various system exclusive messages !! But I am not sure which one i need to delete!!

Any body know which ones. It could be the mdi files I am importing which are midi files type 0 form Sibelius although I have tried midi files 1 which has the same results.

Also I do wich there were dedicated buttons for the play and rewind in the midi recorder. I have tried to re assign in to the buttons but it is not an option.

Thanks