desiladka,
When an application is transferred all ancillary application (EAD and AP) are also transferred. Your EAD application will also soon indicate the transfer. The approval of EAD will now come from the local office....my understanding is local office send all these ancillary application to Missouri??...not sure but from my experience from the date it is transferred takes about 3 months for EAD/AP to get approved.
If you cross the 90 day period walk in (or take infopass appt.) at the local office and get yourself an i-EAD that will give you a chance to find out about your main I-485 application.
All future renewals will have to go through the local office.
Hope this helps.