If I open a score F2014.5 Mac, that was created in F2014 Mac, and has guitar tablature, then try to change the tab by dragging down a bar from a treble clef of regular notation with the mass mover, the tab is out by an octave compared to the same result in 2014.

Why is this, and how can I fix it without having to change every single file that was created in the earlier version?