In Dynamics 365, after forms are deployed as part of a managed solution, there are certain managed properties that can be updated. Here we will look at how this works.
Go to a form under Customizations and select Managed Properties:
This will open the Set Managed Properties window:
Note the properties.
Now, if we go to a managed solution, we see the message that we can edit components if the managed properties allow us to, through Customizations or an unmanaged solution:
Open the customization and select Managed Properties to review what is allowable:
Note the ability to add new forms, change the display name etc: