This is relevant text from the 1st AOR that i got. It does nt mention copies of the forms sent to CIO. Its simple. fill up new forms as per the updated info and explain the changes in the cover letter. Forms sent to CIO will be autimatically transfered to your respective VO.
Submitting your Complete Application
Go to http://www.cic.gc.ca/english/information/applications/skilled.asp
to download the Federal Skilled Worker guide and application forms.
Your complete application must consist of the following:
A copy of this letter with the reference number above
Application for Permanent Residence in Canada [IMM 0008]
Schedule 1: Background/Declaration [IMM 0008 SCHEDULE 1]
Additional Family Information [IMM 5406]
Use of a Representative [IMM 5476] (if applicable)
Schedule 3: Economic Classes [IMM 0008 SCHEDULE 3]
You must submit all documents required by the visa office. Visa office-specific forms and a list of all supporting documents required by the visa office are available at: www.cic.gc.ca/english/information/applications/skilled-mission.asp
If you have changes since you application was mailed to CIO, then you are to fill up only those forms that would reflect the changes. And also mention that new additions/changes in your cover letter. Send the photocopy of the old forms that had all the informations.
I feel only the forms that you would add with new information needs to be signed and dated current and the set of forms that was mailed to CIO should remain with the past date. As mentioned we are supposed to send a photocopy of those forms.
Please wait for more opinions on this.