re: What to do with 2 Old 401K accounts from previous employers

I had a smaller 401K from my first job out of college that I rolled into an IRA (Schwab). I mentioned “back dooring” it into a ROTH and me CPA said it was going to be hard bc he would need to find the cost basis of the 401K. I threw out those forms a long time ago.

Doesn’t make sense to me but anyhow, I’ve got the money sitting in an IRA.