Hey there,
first of all I have to say, that I am so happy BBMO came out. Now song editing is much more fun, but I got some issues and hopefully you can help me.
I got this song with 7/4 Signature during verse and chorus and an 8/4 during transition fill. It is working inside chrome but running on the device itself the transition fill is reduced to 7/4. Any solutions to that?
Maybe I did something wrong…
My experience with transitions that are longer than the beat signature says that you need to hold it over the bar length of the beat. But in my case I had 2/4 beat and 4/4 transition 
So it could be that in your case it would end up playing 14/4 in total 
Also, in my case the fill played 4/4 (the whole fill) so would a fill instead work for you? 