Turbo Tax had been tracking my IRA basis of $5,200 from the 1990s through 2009. In 2010, I converted $15K to a Roth IRA. My basis of $5,200 was subtracted from the $15,000, giving me a taxable amount for the conversion of $9,800. That basis of $5,200 no longer shows up as of 2015. I'm trying to figure out my basis again and not sure whether I "used" it when it was subtracted from the conversion in 2010, or if it was just lost in Turbo Tax due to a number of changes since then - i.e. a divorce and new marriage, switching from desktop software to TT online, or something else.
