User blog comment:Xilinoc/Ch. 542 - THE BLADE IS ME/@comment-10630156-20130620021814/@comment-10630156-20130622010541

With all the enemies in Hueco Mundo I doubt that they will stay there for very long (this is why I counted them being in the Human World because Urahara wouldn't retreat to the Soul Society) they really don't have the firepower there to challenge the Vandenreich that are there and will have to retreat to wherever they can re-consolidate their forces and plan for a counterattack.

If they retreat to a more defensible place and lay a trap it would make sense but unless an Army of Arrancar suddenly appear with Urahara and Co I doubt very highly that they will stay in Hueco Mundo.