Request : FSW PR application : Information change issue and addres to send

Hi All,
Can someone please answer some doubts, though some of these are discussed in other threads, but confusion is also because of new rules.

I came to Canada on work permit in April 2009 and applied to CIC Sydney for PR in April 2010 in Federal worker category. I got 1st AOR in November 2010 to send all documents to Visa Office.

1. Now where should I send the documents (CIO sydney or Buffalo Visa Office) because the address is different based on date of application (26 June 2010). I assume that this date refers to date when first application was sent to CIO, so I need to send to Buffalo Visa Office. Can someone please confirm?

2. My address has changed and also the fact that now I have IELTS score (In my original application I had not ticked IELTS for language proficiency question. I was planning to give a written justification but later I took the exam as it was made compulsory). The address change also affects the background forms (IMM 0008_1e background) as one more row will be now added to those forms for this new address.

So because of above changes should I submit new filled forms or the same forms (photocopies) that I sent to CIO Sydney?

3. Lastly if I fill forms again, should I also change my current job end date (it was april when sent to CIO) to todays date in the form (IMM 0008_3e Federal Skilled Worker)?

Thanks a lot for reading this.

Regards,
Madhav