Amending 2018 State return without Federal adjustment

I am amending a State return only to add a missed credit for health coverage.  This is a state level credit only so no changes required for federal.

"Reason for amending original Return "requires one of the boxes to be checked so  I check "Other Correction".

It then requires me to enter Date of Federal Amended Return, yet I am NOT filing a Federal Amended, only State Amended.

After making my state updates, the final check flags and error that I must enter a date from my Federal Amended Return.

I have tried not checking any of the Reason for amending boxes but get the same result.

Thoughts?