OK, so the PowerApps Studio has been deprecated since I last messed with PowerApps. I'm trying to work through an Microsoft tutorial that supplies two .MSApp files as part of the tutorial.
How do you browse to an .MSApp file? Now that everything is done in the cloud version of PowerApps, "Browse" seems to be absent from the menus.
Solved! Go to Solution.
In the online version of PowerApps Studio, you can open .MSApp files via the Open > Browse menu option. This enables you to select an .MSApp file from your local file system.