After you file

Unlikely.  We're retired, so no W-2's.  Yes, there was CA state withholding (on investment property sold), but the $10K SALT cap has already been reached due to property taxes, so that state w/h would not allow any increase in that deduction.

So it's still a mystery.  The IRS's "Recomputed deduction" amounts shown on the Transcript occurred in TY20 as well as TY21, and I still have not gotten a letter of explanation for TY20.  My TY20 return was approved, even with the potential IRS "correction", so I'm hoping that the TY21 return will be approved quickly so I can file the state return.  Thanks again.