Selecting tracks in X2a

I recently had to do a multiple radio/tv spot production project at my music studio.  As you may or may not know I use 8.5 at my broadcast production studio but X2a at the music room.  After assembling multiple spots on separate tracks in 8.5 I have a little system of using ctrl click to choose each new set of tracks (i.e. spots) to be exported by deselecting solo and then selecting mute, deselecting the track and then reversing the process on the next new track to select and solo it for export all while holding down the ctrl key.  In 8.5 it works great.  In x2a it doesn't work at all.  It keeps selecting other (multiple) tracks and either soloing or muting them.  I have to quite literally jump through hoops to get more than two tracks all selected and soloed.  Does it work differently in X2a??   I'm sure it's something I'm not doing right.  Or is it??

Yup...all my selections for the most part are for non-contiguous tracks.  It works fine in 8.5 and always has...but it never works on my X2a system.