Even if Karr had moved to California in 2000, it's possible he and his former neighbor in Hamilton, Ala. were still in contact or that they renewed contact for some reason.
There's the matter of a brown Santa bear closely resembling an old picture of Karr's childhood one, which bear Patsy allegedly said was "shabby". The pageant bear given to JonBenet was white, with a little banner of some kind.
I'm not saying Karr was the killer, but the brown bear, which I believe is currently in BPD custody, someone correct me if wrong, certainly could be his, and he could have gone there with his former neighbor. Just conjecture. Don't anyone quote me. Just a thought I don't claim is necessarily correct.