Hum indeed I thought we had the “Always Requery Actor” option but we might have deprecate it or it was never there in the first place.
But it should not dump everything at the origin, if you have an actor at a given position in the world, if you query it, it should be at that position. As for using old positions, if you moved the actors with a BP for example, the cache won’t be dirtied. So you need to run pcg.flushcache or Flush Cache in BP on the PCG Subsystem or PCG Component I don’t remember (5.5 only for the BP function)