As Terry wrote, going from PT to Avid is not the way that Tewksbury has imagined us to go. With the “Avid compatibility” settings it is at least possible to go from PT to Avid, but as said, some things (like automation I guess) are not meant to travel that way.
If you are bouncing temp elelements, could you actually bounce them (mix them down to new tracks), or would that not suffice?