Strange MIDI VSTi Behaviour with MOTIF XS

Just upgraded to C8 from C7.5

Using a MOTIF XS8 as a VSTi on both installations and, as far as I can tell, the two are set up identically but I must be missing something…

Here is a small part of a MIDI project as it renders on C7.5

And here is the same MIDI project rendered on C8

What have I done wrong?