Hey man,
Hopefully you haven't given up yet/done all the changes yet. I had the same problem as you and I figured out my problem after I imported through webull.
It seems they had issues with the lines that reported the dates as "Various" as the purchase date.
If you go to the just go to your state filing first and let it import the data from your federal filing and walk through it, they will actually tell you which specific lines are having an issue, as the federal check seems to just tell you the last line in the reported file.
Basically, I used to state filing to figure out I had 4 lines with messed up dates, and I manually corrected those dates and it fixed everything for me!
Hope this helps man.
