msedge_proxy.exe and "Install this site as an app"

[storm777]

I have been using the "Install this site as an app" option to create a task bar shortcut to my personal gmail accounts. Then later I started one for my company use and that worked fine and opened up a new window. For the last few years this worked fine. But then today, they both started to open the same account. When I deleted the one and tried to recreate it, it stopped allowing me to create a second one. It used to be that 

I've looked everywhere for the syntax and arguments for the msedge_proxy.exe command but can't find any documentation on it that makes sense.

in the old days the shortcut would call either 

https://mail.google.com/mail/u/0/

or 

https://mail.google.com/mail/u/3/
where the 3 would indicate the relevant gmail account I needed.

But now it all looks different.

Does anyone know how I get back to having 2 shortcuts?

Thanks

[#2]

I should add, right now the shortcut looks like this:

 "C:\Program Files (x86)\Microsoft\Edge\Application\msedge_proxy.exe" --profile-directory=Default --app-id=fmgjjmmmlfnkbppncabfkddbjimcfncm --app-url=https://mail.google.com/mail/?usp=installed_webapp --app-launch-source=4

I tried changing app-launch-source=4= 4 to another number but didn't see any changes.

[#3]

I found that I had to create a new profile in Edge to get two different gmail accounts installed as web apps.  The resulting shortcuts are identical except the --profile-directory value. I ran into similar issues like you described, but I don't recall if that was on switching from Chrome to Edge, or at after already on Edge and finding that something changed. Perhaps this solution will work for you.

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge_proxy.exe"  --profile-directory=Default --app-id=fmgjjmmmlfnkbppncabfkddbjimcfncm --app-url=https://mail.google.com/mail/?usp=installed_webapp --app-run-on-os-login-mode=windowed

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge_proxy.exe"  --profile-directory="Profile 1" --app-id=fmgjjmmmlfnkbppncabfkddbjimcfncm --app-url=https://mail.google.com/mail/?usp=installed_webapp --app-run-on-os-login-mode=windowed