I just created (using a template setting) a 1080i 60 project. Added some footage, and built a quick lower third using a generator, a rectangular mask, blur filter and colorize filter. I then added some text, and added a cheesy behavour to it.
I then created a new project, custom setting, 1080…23.98. Moved it to my other screen.
Went back to first project, copied all my groups, went to my 23.98 project, hit paste, and everything came in…all footage, filters and behaviours.
Using Motion 3.02