EAD on Hold some info..
I'm not sure this is the reason, but sounds logical. But it obviousely applies for concurrent filers only.
EAD on Hold, this one may throw some light..
In response to a request for clarification made by the American Immigration Lawyers' Association, the INS Immigrant Services Division provided the following information:
"ISD reminds us that concurrent filing refers to an I-485, I-765 and I-131 filed with an I 140 as well as an I-485, I-765 and I-131 filed to join a pending I-140. If the I 140/ I-485 are filed concurrently, the service centers must take the following steps:
(1) Conduct a prima facie review of the I-140 petition within 45 days of receipt or adjudicate the petition within 60 days. If a center determines that an RFE is required, the RFE must be issued within 75 days of petition receipt. Where the center is adjudicating cases within 60 days, it is possible that an RFE will be issued for “additional evidence”, rather than “initial evidence”.
(2) Maintain a 60-day processing time for concurrently filed I-140s. As indicated above, if an RFE will be issued, it must be issued within 75 days. Once the service center decides to issue an RFE, the RFE will cover any and all evidence. It will not be limited to “initial evidence”. Per 8 CFR 103.2(b)(10)(ii), interim benefits will not be granted based on an application or petition held in suspense for the submission of requested “initial evidence”. In addition, 8 CFR 103.2(b)(10)(i) provides the regulatory basis for restarting the clock at the time the Service receives the response to the RFE. The center then has an additional 90 days to adjudicate the I 765 before an interim EAD will be issued. Therefore, where “initial evidence” is requested or where “initial evidence” and “additional evidence” are both requested, the clock stops on the EAD processing. If the RFE is issued for “additional evidence” only, the clock will not stop and the interim benefits (EAD and advance parole) will be processed.
(3) If there is no processing hold due to an RFE for “initial evidence” or for both “initial evidence” and “additional evidence” and if the 90 day processing is not met at the centers, District Offices should continue to process the I-765s."