Gmask shape into action

I have a gmask node with lots of points and it animates. Is there anyway I can copy the data into an action to use it as a gmask in there.

I have tried the obvious copy/paste and save/load but cant make it work.

I only use gmaskTracer exclusively now, ditching the old legacy gmask. (Although still fighting muscle memory on occasion). Action interoperability is so handy.