Port priority date

Dear filers,
I have my EB2 approved with priority date in 2012.
I later got my EB1 approved in May but I don't know how to port my priority date to this new petition. How can I update USCIS?

to blackrabbit753:

Did you include your previous PD in your EB1A petition? It has this question on the form I140.

to blackrabbit753:

If you have revealed your previous EB2 I-140 petition when filing EB-1A I-140, which you should have done, your earlier priority date will automatically be ported to your EB-1A I-140.

to Annie:

Thanks. Glad to hear that it'll be done automatically.