Using SearchWP with Memphis Docs

We have an extensive PDF library managed by Memphis Docs that is not well indexed by the native WordPress search. We love the way Memphis Docs manages our files. We would like to integrate the SearchWP plugin since they index PDF content. The trouble is that all files that SearchWP indexes must be contained in the default WordPress Media Library. Is there a place that I can specify that files uploaded in Memphis Docs be uploaded into the main WP media library? I have spent quite a few hours looking for ways to integrate the two plugins. I would appreciate any help or guidance. Alternately, we are open to another plugin aside from SearchWP that works with Memphis Docs for PDF content search if you have recommendations. Thank you for your help.