NEW Open local files in Internet Explorer mode file extension allow list (Edge)

[KyleASimpz]

I'm trying to open .htm or .html files in IE Mode in Edge but its only opening up in Edge.

* I have the latest browser
* I set the policy Configure Internet Explorer integration (InternetExplorerIntegrationLevel) to iemode
* I set the policy Open local files in Internet Explorer mode file extension allow list to .htm and .html files

Is there anything else I need to do?