Forgive the cross-post - but this is appropriate here as well.

I noticed that when I used the client software (as opposed to the web interface) to modify a device, that device always moved to the last position on the interface page, and it became the final device on the final page after the upload. In other words, the last device edited always becomes the last device in the software and on the remote.

As jlet says, the devices in use for an activity will always be first, but with some careful planning you could edit your devices in a specific order to arrange them the way you want.... It would be a lot of work for me, I have 11 devices on the remote, so I just let it arrange them the way it does.