Hello,
If you’re using layer styles, emboss, drop shadow etc. you have to convert them to physical layers by selecting the effected layer and going to:
Layer > Layer Style > Create Layer
I read about this somewhere but can’t remember where. I’ve just tested it with a bevel and it works although I had to mess about with some masks in Motion to make it look right.
I use Motion 2 so not sure about ver 3.
Hope this helps.
Steve