Why the location change?

Does anybody know why they changed the location from North Carolina to Colorado? I also thought it was odd to have the character Bridgett, played by Jaclyn Smith, have a southern accent in the movie when they lived in Colorado. Bridgett even referenced her southern heritage at one point in the movie which just doesn't make any sense to me since they were supposedly from Colorado. They should have either shot this in North Carolina using the accent or dropped the accent if they were in Colorado. Big production flaw in my opinion.