Captivate 9 - Mobile Landscpae

I just started using this new version and I'm trying to display my project on my iPhone Plus in landscape mode.  I've  made the following device settings:

974 x 672 - Desktop/Tablet Landscape

768 x 928 - Tablet Portrait

628 x 414 - Mobile Landscape

414 x 628 - Mobile Portrait

When I publish my project, all of the different settings work with the exception of mobile landscape.  Instead of Mobile Landscape, it displays the Tablet Portrait.  What changes do I need to make to my settings?

Thanks