These are the terms that the Raider.IO addon are using for the different dungeons. Please add them as keywords for the new dungeon filters.

FLOOD = Operation: Floodgate
BREW = Cinderbrew Meadery
DFC = Darkflame Cleft
ML = The MOTHERLODE!!
PSF = Priory of the Sacred Flame
ROOK = The Rookery
TOP = Theater of Pain
WORK = Operation: Mechagon - Workshop

Upon further inspection, it seems that only Operation: Floodgate is different between the two, so if "flood" could be added as a valid keyword in the filter that would be appreciated.

I always try to sync the keywords with rio. It looks like they changed the keyword last-minute as I'm pretty sure I did use fg because of them using the same. Anyway, you may now use both fg and flood.