Keyframes DISAPPEARING

I cut 11 x 6 min edits recently. All of which have a number of keyframes to slowly scale up or reposition shots. 

I save Premiere...close it...open it again and the keyframes have gone.

I updated Premiere and tried again. Added keyframes...saved it...and re opened it and they're gone again.

I've tried using 'transform' on the clip itself, and on an adjustment layer as a work around, but still - the keyframes vanish if Premiere is closed. I can't keep Premiere open, and hope it doesn't crash, for another week until the project is finished. 

Any ideas? Before I go absolutely insane? Another day another problem. Appreciateany advice!