Through my employer, I made both a pre-tax 401(k) contribution as well as an after-tax 401(k) contribution. In the past, I rolled over the after-tax 401(k) contribution to my Roth IRA outside of the 401(k). However, this year, I received a 415 limit refund and the 401(k) provider took the 415 limit refund from the "after-tax" portion of my contribution, sending me a check for the amount. Since the money came out of my after-tax contribution, can I add that money to my outside Roth IRA as a rollover contribution as I've done in the past?