How to approach ingesting existing XFA form into my master index XFA form.

Many users use an existing XFA form for single use.  I want to prototype an Index XFA that ingests the single use forms.  I'd like four effects: 1) the Index copies defined fields from the single use like Title, Date, tracking number, and expiration date and builds an index or table of contents; 2) it attaches or duplicates the single form, in order, below the index page; 3) if the single form has accompanying attachments, those transfer as well (maybe the most difficult effect here to execute); and 4) upon expiration (manual selection okay), delete the row from the Index and remove the pages and attachments, if required.

I have an unlocked single use form and I intend to create pages, match fields, and define an import function that simply reads each field in the single form and clones itself in the Index.

Does something like this already exist?  I'm having difficulty searching online through all the convert pdf ads.

Thanks!