I've been tweakin' sum sounds on my Korg Trinity, and they Sound dope as Fuck, But, When I sequence them in Cubase the sounds revert back to the Presets?!!!
try to do a "system ex dump". that "might" work. i dont have a trinity but i have an xp60. i do have cubase and i DONT experience the problem you are having. i do the same thing you do and never had that problem........
if that doesnt work save your sounds as USER SOUNDS (you should have a user bank) and you should be cool....
Just been bustin' my ass @ work and School, I've also been lookin' for a part time Job, so I can focus on School and My music.
Tryin' to figure this Cubase Thang out. Maybe I'll hit up Korg and Steinberg tomorrow.