Hi,
How do you migrate an addon from a listed addon to an unlisted addon without losing all the existing users? AFAICT listed addons always update from AMO (the update URL must be left blank). So how do you distribute a new addon that starts updating from a 3rd party server? Surely you’d have to get an addon on AMO that includes the update URL of the 3rd party server? Is there any other way?
We have to move from a listed addon to an unlisted addon because it breaks one of Mozilla’s addon policies, which we were not previously aware of, and currently cannot change (addon requires a subscription for full functionality).