1099 DIV adjustment

Yes. Since Qualified Dividends are taxable income, this would increase your taxable income and also possibly increase your tax due or lower your refund.  

Hmmm, I disagree somewhat.

As long as the value of box 1a didn't change......and box 1b is still equal-to or lower than the box 1a value.

Then the increase in your box 1b value could lower your tax liability....because the 1b value just allows some of the dividends to be taxed at lower tax rates.

But whether it has any effect at all will depend on all your income for the year.  The only way to tell if it might result in a bit of a refund would be to prepare an amended tax return to see what happens.

Don't amend until the original tax file ahs been processed, and any refund issued...or payment for taxes due has been paid on the original file.  That original file cannot be stopped.....so the original refund, or payment due, needs to be completed.