I agree with you that it doesn't seem right to move a cemetery; especially when it was apparently not done all that reverently. One would like to think that being laid to rest would be sort of a permanent thing.
I'm sufficiently intrigued with Philadelphia history now that I've ordered a couple of books that might help me understand what was going on during the time my ancestors were there; i.e. the 1840's and thereabouts. At least Philadelphia has a history. In Alaska, where I live, "history" usually doesn't go back further than the early 1900s.