OK thanks Noel.
I do use your suggestion most of the time.
And hopefully this works almost always.
However I hit cases where the note is entered, then changed thru either the Piano Roll or Staff Roll. It gets really played as expected, but is only correctly shown (in terms of duration) either in PianoRoll or Staff Roll.
I'm talking about actual quarter notes (around 114 tics) duration that are shown as 1/8th notes (around 55tics)in notation-edit or in printout.
Once this 'problem' is hit, I could not manage to correct this by entering again the notes or whatsoever.
It seems that BiaB has 'memorised' somewhere the 'wrong note duration'.
I'm confused not being able to add images in my post that would have shown that .

Robert Larrieux