If you import the dividends from a financial institution there is a test you could perform if you feel up to it
Delete the just the dividend importation that is source of 8a-Y column from the list of imported items, leaving the capital gains and all other imported files from other sources untouched.
Manually enter the dividends that were not imported and proceed as you had before in filling in the government obligations.
See if 8aY is still in error. Manually entering the data corrected my issue.
Since your end result still comes out in the wash it should make no difference, but it could add to the available data for the developers to locate the problem.
Mine falsely reduced my Mo taxable income by almost $7K.
Great ... lower tax, until it triggers an audit.
