You can reuse a supporting document as long as it is attached to the claim being referenced.
However, please note that we cannot accept a supporting document that references claims to which it has not been attached. The supporting documentation must always be attached to each claim activity.
Note: Using the Contact Microsoft Support button requires you to login into the MPN site using a valid Microsoft Partner Network login. If you do not have a valid Microsoft Partner Network login or are having problems logging in to MPN, you can get more information or assistance from the MPN Support site.