I'm just as perplexed by this. My limited understanding of the AMT leads me to believe that you should enter in one or the other spot, but not both, otherwise it will be double counted. Manually doing the calculations as to whether and how much AMT I'm obligated to pay and comparing that to what's shown in the putative form 6251 when I enter Exercise and Hold in both locations makes me think this is a TurboTax error, or at best a very ambiguous wording.
