Ray,
That is correct. Bluetooth and some Peer-to-Peer devices need to be set to automatically connect. This is common on Apple and Android. Many of the Android apps need a "helper" to connect to the Dual and other external or Bluetooth GPS units. We built a helper right into the iFly GPS App.
We will try and replicate this and get a fix out should it be a bug. Thanks for your feedback and bringing this to our attention. Also can you provide what Tablet you have and that you have the latest iFly GPS version app?
FYI: If you leave iFly GPS, you might try touching Menu, Exit Application. Then upon opening iFly GPS back up, see if you Dual connection is active. Please allow upto 10 seconds or so for it to make the connection. We'll do some additional testing here to help identify this behavior.