Question: Why were different actors used for the voices of Judy and Elroy instead of the original actors?
Answer: Daws Butler, the original voice actor for Elroy, died in 1988. Janet Waldo did record a voice track for the feature but was replaced by Tiffany to attract a new audience off her popularity.
Question: Why does the gargoyle in A Lover's Vow stick around Preston disguised as the lovely Rae Dawn Chong?
Answer: The gargoyle had been watching Preston through his window for a long while and, falling in love with him, assumed a human form so she could be with him.
Answer: She most likely wanted to keep an eye on him, to make sure he would never break the vow.
Question: Does Jamie leave her at the end, after seeing her kissing outside, or will he always be there with her without her knowing it?
Chosen answer: I've always assumed that Jamie does indeed leave, going on to wherever he's going on to. My read of the story is that Jamie has come back to help her move on with her life (whether he knows that himself is unclear). As she has begun to move on, he himself can now go to whatever awaits him.
Question: The movie never provides a explanation for why the cops don't go in the Warzone area. Why don't they?
Answer: These areas are controlled by gangs and it is implied the police won't enter out of fear.
Answer: Because that's what psychopaths do.