Bounce selection problem

I’m trying to bounce a part - as I normally would - by selecting the part & then audio>‘bounce selection’. However - muted events from within the part appear in the resultant bounce! This used to work fine. Been able to check this in Cubase 7- seeing same behaviour.

What am I missing here - has something changed?!

with thanks.

N6.06
C7.06
Mac OSX 10.8.5

Mark