There may be no AMT numbers on Schedule D in Lines 7 and 15, which is why TurboTax did not populate them.
It looks like it did populate the next two lines; Schedule D, Line 21 and Form 6251, Line 4. The entry areas reference Schedule D, not the worksheet.
Line 7 is Net Short Term Gain/Loss Total; Line 15 is Net Long Term Gain/Loss Total.
Since we can't see your return in this forum, I can't speak to what amounts are on the worksheet, but generally if you follow the flow of entries and use the Learn More links, you can determine why a number didn't pass from the worksheet onto Schedule D.
Here's detailed info on Capital Loss Carryovers you may find helpful.
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