Dear Prashant
Please get the things clarified -
1) 1st AOR (what we call as PER - Positive Eligibility Review) is sent by CIO Sydney, Canada. It is an email confirming that your application has been accepted for further processing and is being sent to your VO. It will have your file # and UCI #. File # will be 9 digit # starting like E000******.
2) 2nd AOR is sent by your Visa Office. It will be a hard copy sent via Ordinary Indian Post to the
communication address that you have mentioned. It confirms that your file has been received by them and they will be processing your application. They will also inform you that you need not disturb them for next 6 months!! It will be having the same file # / UCI #.
So no need to worry ....
...It will also contain the receipt of amount paid by you for processing.
Cheers, aNil