Second, I have to say that I have also found a bugged dig site that pointed to outside the dig area. Standing just at the edge of the dig site pointing out, the survey tool would be green, but if I went even one pace in the direction that it was pointing at, it would not allow me to dig. I tried different angles, but no joy - it kept pointing me always to this undiggable spot just outside the edge of the area (Dire Maul, in one of the corners of the courtyard). Which leads me to a...
If I don't dig completely one of the dig sites on my map, will it stay there forever or will it be replaced, at some point, by a different site?
I am concerned that this undiggable artefact in Dire Maul is just going to keep that dig site stuck on my map reducing my dig sites to 3 on Kalimdor.