One of my categories suddenly changed its name to a bunch of random letters
I was doing some category rearranging and everything seemed fine. Then a week or so later I noticed that my vacation category suddenly had a weird name with a bunch of letters (CC203FA7-EE79-42A8-8ECB-CF8465FF1791) and some, but not all, of its sub-categories had gone away. Er, any guesses as to what happened? Anything I should do to make sure this doesn't happen again?