pijiang teacher, please help!!!

DEAR PIJIANG,

OUR COMPANY JUST MOVED TO NEW LOCATION. MY LAWYER ALREADY REICEIVED MY CASE APPROVAL FOR H1B EXTENSION WITH I-94.BUT I DID NOT RECEIVE MY COURTESY COPY BECAUSE OD ADDRESS CHANGE.TODAY I CHECKED WEBSITE, IT SHOWED:

Current Status: Notice Returned as Undeliverable.

On January 13, 2009, the post office returned the notice we last sent you on this case I129 PETITION FOR A NONIMMIGRANT WORKER as undeliverable. This may have serious effects on processing this case. Please call 1-800-375-5283 to update your mailing address for this notice to be re-sent.

WHAT I CAN DO NOW? IF I HAVE TO FILE AR-11? MAY IT CAUSE ANY SERIOUS EFFECT? FOR NOW I DO NOT HAVE CASE PENDING.

THANK YOU IN ADVANCE!