Just wondering if this is possible.

 

I want to retain ownership my existing number, that I've had for 20 years. It is currently ported to Skinny. But I want a new number with my existing rollover balances transferred to it however I don't want the existing number lost to me which is what I suspect will happen if I just get a new number issued and if I port the existing number away, I will lose my Skinny account balances.