Very helpful thread here, I had same issue with TT 2023 asking about 2021 Sched D for AMT.
I pulled up TT 2021 (luckily haven't decommissioned the Windows 10 PC I had that on as .PDF tax forms wouldn't have sufficed here) and went to Forms view... I could easily see my Schedule D, but it wasn't so obvious how to "request" the Schedule D AMT... Turns out going to Forms->Open Form->2021 US form 1040->Schedule D->Schedule D AMT did the trick.
My Numbers for 2021 schedule D AMT were VERY different for non-AMT schedule D, though in the end it didn't affect my taxes for 2023 so just a waste of some time booting up an ancient PC to grab this.
Could have taken a LOT longer if not for the help in this forum, so thanks all for sharing your dealing with this!
