After you file

The same is with the cd version.    I am amending my 2018 in a situation where I am going from itemized deductions to standard, I am going from 15k deductions to 12k which I know will reduce my income-tax refund from $5400 to about $4700.  Instead it creates a return with my getting additional money.  I have tried it 6-10 times and the funny part is the CA state does work half the time.  help