I was unable to find PDF OLD + New PDFs by using Search Card

then I have mapped Number variable which is in  Office file Card to the Approved PDFs. Task

So from now onwards all the PDFs No. will display on Office file Card. Earlier It was not showing on office file Card

Because of Mapping of variable I can able to search New Approved PDFs from their respective numbers.

but  already created PDFs(OLD)  I want search? Is their any solution?