updating schools/fee waiver?????

hi...everyone...i had a quick question. i was approved for the fee waiver and once its approved, then u have to submit the application within 45 days. I did submit it within 45 days. Is it possible to add/update school designations even though it's been over 45 days now? I dont know if updating will revoke my fee waiver award. I called aacomas and emailed them, but they still haven't replied me back yet.......if ne one of u know abt this..plz help me..
thanks