Yeah, Amethyst and Iris, not sure this is the reason, everyone uses more than one client. I have noticed that some clients don't pick up on follower list although they have ALL my notes AND profile info. The first time I looked, my follow and follower list were gone on both clients, so I didn't bother checking the other times. I assumed that for some reason, follower info, unlike notes doesn't get 'redund-ed' (?) and possibly only gets sent to one relay. In that case, who knows, maybe it was just down for an hour or two. I went to a prominent Bitcoiner's follower list and added them back instead of waiting to see. I suppose I should have left someone I was positive I had followed un-refollowed to see if it would come back the next day to test the theory.