How can I rollover my Roth 401K from my old firm to my new firm's traditional 401K plan?

I have a personal choice retirement account with Schwab that's 20% Roth 401K and 80% Traditional 401K. I recently switch jobs and my new firm does not offer the Roth 401K. What are the consequences of rolling over? Can I recharacterize my Roth 401K as a traditional 401K and get back a larger tax refund?



Thanks for your help.