I amended my 2020 return (above the line) that reduced my AGI by 18% but Turbo Tax bot claims no change in federal refund..

Hello.

Thank you for taking a look at this:

IN 2020 I incurred $17,000 in lawyers fees (from employment discrimination suit, which qualifies as an "above the line" deduction. The resulting AGI adjustment lowered my AGI by 18$ (my AGI went from $97000 down to $80,000).  my original refund was $400.  When I followed the Turbo Tax instructions carefully (downloading the appropriate version for amending my 2020 taes originally prepared via Turbo Tax), the message Turbo Tax gave me was that it did not change my federal return (refund). 

This is difficult for me to believe when my taxable income dropped so much. Can this be possible, or should I expect a change (an increase in refund after I amended my AGI with the $17000 (above line) adjustment to my AGI??

Please help. Any info would be so appreciated.

Esla