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In reading the IRS link from response 1 this speaks to rolling to Roth IRA which is outside of the 401k plan. The money I moved stayed in-plan,  so it is roth 401k. So any special rules related to Roth 401k. The IRS site does not have anything easy to find on  this topic. I know the treatment of the money in the roth 401k and roth ira for growth. I am asking asking about transfers or rollovers. Anyone aware of the IRS writing how the roth 401k is the same in treatment during rollovers? I have not located anything.