Changing Midi Note Duration

[gairvine]

Any help with this question would be greatly appreciated; I pulled my hair out last night trying to figure this out.

I would like to double the length of my midi notes and move them in the timeline so there is no overlap. Essentially I'm creating a half time version of the original.

I know I can do this by changing the metronome setting ( from 60 BPM to 30 ) in this case and the notes will conform, but then the problem starts.

I'm moving these midi tracks to another session and when I do the midi reverts to the original durations and is 2x to fast for the destination session.

I've searched the internet and I've tried every workaround I can think of short of manually changing all the durations in the initial session and then moving them on the timeline so I don't have overlap ( I can't help but think there's a quicker way ).

Any help would be greatly appreciated. Kind Regards