Configure button in Connectors window should take you to the Configured events instead of creating a new one
In the Connectors window (choose Connectors from a channel), if you already have as connector then it appears at the top of the list with a Configure button. This gives the impression that you are going to change the settings for your existing connector. However, at least in the case of a Visual Studio Team Services connector, pressing the Configure button doesn't configure your existing Visual Studio Team Services events. Instead, it adds a new event. This was not what I expected.
Instead, pressing Configure should take you to the list of already-configured events. (You can currently get there by clicking Configured underneath Manage on the left. But I didn't notice that because the big colored Configure button made me think that was what I should use.) It would also be necessary to place an Add button beneath the list of events. Now, when pressing Configure the user could see all their existing events or add a new one. This would be much easier to understand.