Hi Steve
Will post screenshots when I have access to the machine.
In the meantime while trawling the forums I found this thread that perhaps explains the issue better than I did:
The problem is easy to reproduce.
1.import a midifile of a popular tune making sure it is rigidly quantized…beats are exactly snapped to grid lines
2.import audio of same tune
3.align audio and midi so that first beat is synced but tempo is not perfectly matched, they will drift as the tune progresses
4.run tempo detect on audiofile
5.midi is now not snapping to grid bar lines
6.create a new midi track…events on this track will be displayed and snap correctly
Hope that clarifies somewhat the issue.
Thanks in advance