I have a RX-A750 setup with a pair of speakers outside. If I select Zone 2 in the Yamaha app, and then select a source, such as Net Radio, or streaming music from my phone, it also is changing the Main Zone to the same source. It will not select the input outside only. Party Mode is off, the amp is assigned correctly for 7.1 + Zone 2 or however it is labeled. Is this new with the new model year? Never had this issue before (granted I do not setup Zone 2 all that often, but have done it without this issue).