2021 amended return - two questions

Correcting the mistaken Schedule E purchase price of a residential property. Observations and questions:

1 - The purchase price correction [though significant] does not change the total tax owed or the [small] refund. This is expected.

2 - Depreciation and carry forward amounts are updated. Also as expected.

3 - BUT..  TT 2021 generates the amended return forms where the previous refund [I already got], shows up again as a refund IRS owes me.

This is not expected. The amended return should show no taxes owed and no refund.

What am I doing wrong, what am I missing and how do I correct this ?