I've shattered a pane of glass and I've gotten the uvs and everything to come through into the alembic nicely. The only problem is each shattered piece has a copy of itself right on top of itself.
Using rbd bullet dynamics node. Could having more than one rbd fracture node in a node chain cause double faces to be created?

Hard to tell without seeing your setup, as this could be caused by many things. Is the double-geo also right after your dopnet? What do you import to SOPs from your DOP? Maybe you copy geo and your collisiongeo to SOPs.