I've created a test document with attachment enabled return receipt and sent from outlook to a user in a Lotus notes environment.  In the different Lotus Notes environment after running an agent that removes the return receipt, then knocking my access down to reader access I drag the document to a folder, which makes the document an eml document

I then open the document in Lotus notes and it generates a return receipt.   Every time I open the document it generates a return receipt.  If the return receipt was still enabled this would make sense to me, but if I've removed the return receipt mark why is it generating a return receipt?

I read that in 2014 there was seemingly a issue that Lotus had and fixed shortly there after.

Is there a way to prevent return receipts from being generated after made into an eml document?

Both server and client are at 9.x