I'm in the process of transferrin my amazing credit:

Called my creditors BoFA and Capital one to update my SSN. Bofa did it over the phone but Cap One needs copy of my SSN and ID which i'll fax. DONE

Called the credit beaureus- they told me to fac them a copy of my SSN and ID and they will update it. DONE

I'll check in a few months because my creditors are in charged of reporting my credit monthly so you gotta make sure you talk to all your creditors!