THis is what I found on other site....
Quote:-
filed for AOS in Aug 07, my attorney advised me that we could combine the checks payable to USCIS for family members (EG: in place of one check for my 485 and one more for my wife we could combine both the checks for 485 and issue a single check for twice the amount). Based on the above, i issued 1 check for 485, 1 for EAD, 1 for FP and 1 for AP.
Now my checks have been cashed and i am able to see the receipt number on the back of the cashed check. I see two receipt numbers on the back of the checks for EAD and AP however i see only 1 receipt number on the back of the check for 485 (and the same number on the back of the check for FP)
Did any body else also send combined checks? Did you get a single receipt number or multiple numbers?
Thanks.
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So this says that you can send combined payment.
Thanks