I understand that:
Rigify generates deforming bones on a specific layer, and I can manually adjust (paint) weights after I generate the rig.
I can make change on my metarig and regenerate the rig.
My problem is, do these two features work together? For example if I generate a human rig, manually paint some weights, add a tail on the metarig, and then regenerate the rig, would my manually-painted weights remain untouched?