RE: Outlook Add-in multiple production Environments/Sandbox
Hi, I ran into this problem recently while testing a new feature.
More details:
https://yzhums.com/23716/

As you might know, In the current version, when we deploy Outlook Add-in, we need to download two files in BC first.



Then upload to Integrated Apps in Microsoft 365 admin center

As shown in the screenshot at the beginning, the environment name is included in the downloaded xml file, so when you deploy into the Microsoft 365 admin center, only one environment will be available.
If you need to switch, you must first remove the old version, then re-download the above two files in the new BC environment, and deploy them to the Microsoft 365 admin center (the redeployment may take 24 hours to take effect)

Hope this info helps.
Thanks.
ZHU