Is there a way to either a) change the X Y position of the workspace (to fit in with the layers above), or b) to simultaniously re-position all motion tweens to fit in with the work space?

unusual and awquard question? well yes, i'm trying to crop the work space from the top and the bottom but resizing it has only cropped the bottom off, so either all the layers or the workspace needs repsositioning.

thnaks