Open the cr2 in Morph Manager. Right-click on BODY. Select Properties from the pop-up menu. This will open a new panel titled Block Info. Open up the channels section, and you'll be able to select and delete any of the full-body morphs, as usual.

Mind you, these are only the full-body morph control dials. If you want to delete the actual morph deltas themselves, you'll have to identify and manually delete each body-part morph linked to that control dial.

As far as copying goes, Morph Manager can copy the individual body-part morphs that make up the full-body morph, but not the full-body morph control dials. You'll have to cut-and-paste the control-dial info into the second figure's CR2 using a text editor.