Changing File Name of documents within clipped documents

Does anyone know how I might achieve changing the filename of clipped documents especially if I need to export them with a specific index data value.

For eg. Statements and Invoices are clipped (API) and sent via email (Workflow) to customer. The zipped file contains the correct documents, however the filenames of the documents adopt iteratively the original filename_1

Before clipping, DocuWare splits and indexes the invoices from a single PDF (using barcode). 

I do notice the Section Class contains 'OriginalFileName' but for the life of me cannot figure out how to commit a change I make to it. I've also tried changing 'DWNAME' and the document Title. Document Name is marked Document Number in the File Cabinet configuration.

Anybody have any idea?

Dear Dane Summers! It looks like the Community cannot answer your question. That's why we have opened a Support Request with the Number SR-148910-C4N3C for you. A Software Support Specialist will contact you directly to follow up. We will update this thread with the solution as soon as we have resolved the Support Request. With best regards, DocuWare Support Team

Thanks for this, Matthias!
I had posted a similar question last week in regards to renaming of documents, as well as having issues with renaming clipped documents.  Where we are looking for a solution to rename filenames to specific index data values.  Link to the post here: Renaming Document / Filename from Document's Index Values · DocuWare Support Portal

Thanks!