Deborah - if you created a Proof Approval report, you can use the
following text mode filter to include only Proofs within a specific
portfolio. You'll just want to swap out (insert ID here) with the actual
ID of your portfolio, which can be found in the URL.
EXISTS:1:$$OBJCODE=PROJ
EXISTS:1:documents:currentVersionID=FIELD:documentVersionID
EXISTS:1:portfolioID=