I applied for deferred action plan (early childhood arrivals) back in Dec. 2012. I have all receipts (with different receipt numbers) up until I took my Biometrics exam. I seem to have lost the confirmation letter after that. Would that be the receipt number needed to check status online? I have my other receipt numbers but not sure if the last receipt number is needed to get the latest status on my case. for example, 1st letter of acceptance ended in receipt number 35, next letter confirming my biometric exam ended in 36, im assuming it would have ended in 37 for th enext letter?