I appreciate your prompt replies.

I understand that QB currently does not currently support this feature. But I don't see how you are talking about this being in compliance with IRS limits for After-Tax contributions which is much higher limit than what QB is allowing. 

As a minimum, I feel like you should work on providing provide some work arounds within QB Payroll so we can implement these IRS supported Mega Backdoor Strategy. I believe there are at least some people who are using this strategy with QB Payroll, but I can't seem to find any right answers. You say contact CPA and CPA is saying to contact QB Support. We are just not sure where to go.