If a T-IRA's current total value is less than the basis (total of after tax amounts contributed over the years), and the whole balance is converted to Roth, and the total balance of all T-IRAs at the end of the year is zero:
(1) Form 8606 will still show a positive "remaining basis" on line 14 on account of losses in spite of zero T-IRA balance. Is this OK for tax returns in the current and future years?
(2) Has IRS dis-allowed deduction of these IRA losses after tax year 2018?
Thanks for your clarification.