Looks like the AMT amount shown in the 5 year summary is from T691 line 117. I think it should be from T691 line 95 instead?
I’m looking at a T1 that’s subject to a small amount of AMT, but it’s showing up as $nil on the 5y summary because the amount isn’t calculating as available for carryforward. Looks like it’s not eligible for carry forward due to foreign tax credits.