>I’d entered my ISO info in two different forms in TurboTax – once after searching TurboTax Help for ISO and AMT, and again when TurboTax asked me about ISOs near the end. I’d originally assumed it was just validating or overwriting the numbers I’d already put in, but it was actually creating duplicates! (C’mon, how does software like TurboTax not validate against duplicate entry???)
That's pretty astonishing and I guess their testing missed it too or assumed the usual ISO field and searching help about ISO were different ... but that maybe should have raised questions for them. You would think just a couple extra sets of human eyes would catch that one.