Hello BIAB Family

i have a question about some bass track issues i'm Running into in some of my Midi's
they were built playing really low on the bass scale of the keyboard...so on some when i have to change the key's on them to be able to sing them...they are so low in tonality that they sound garballed ...messed up

so what i'm needing to do is move the whole bass track up in tonality to get it to sound good..
now what i'm wondering is this....Noel taught me how to get into the piano Roll portion of BIAB and fix
drum track's adding some snare to a track...

would i approach this bass problem the same way?....moving that whole bass run up to a different octave in piano Roll? or is there another short cut to move that bass line tonality higher on the scale that i haven't discovered yet?

thanks for your time reading this...and thanks for any and all advice

cajun