Why do signed PDFs get mailed in multiple parts?

Got it, so if I understand correctly the sign and filed (completed) email is splitting the agreement into multiple documents.

So your experience for example is you uploaded 3 documents into your agreement, once agreement routing is finished and everyone has signed, the completed email has multiple attached PDFs, matching the 3 original documents uploaded. Yet the desired state is that the attached PDF is one document and keeps those documents combined.

The fix should be a setting update. You can make this at the account level in the Global Settings or if you want to make it just for your group, you can update this in the Group Settings. The setting you will want to update is 'Merge multiple documents into one document after signing' and set it to 'Merge documents'.

'edit' - One thing you will need is Group or Account admin access, if you don't have this and can't make setting updates please reach out to your internal admin.