I had 2 conflicting answers related to this when I called both HH and Delta. I forgot who said what.
I specifically asked one of'em if it had to be in increments of 5,000 miles and CS sed no it doesn't have to be. 1 Delta mile = 2 HH pts. and subsequently told me to mail in the request. I called the other one, and CS said yes it has to be in increment of 5K. So I'm now confused as to who to believe. I do recall seeing somewhere that it's 5K miles = 10K HH pts. Help!