Save emails to SharePoint via PowerAutomate

Hi,

I have created a flow which looks at an Outlook email box for new emails and saves them a SharePoint library for record keeping. The way this is done is using the "Export Email" step. 

This is all working fine and I can preview the email message in SharePoint, however if I download this file then the email cannot open in Outlook. It warns me that I do not have permissions or its already open and neither option is true.

Any ideas why MSG files created via flow cannot be opened in Outlook?

Dhiran