[Ardour-Users] MIDI edit : draw a note in only 1 of multi duplicate region ?

[fred]

Hi list,

have made a basic beat in a 2 bars region, and duplicate to the lenght 
of the song.

Now, in some of the new regions created, like to add or del some notes.

When draw a note with the pencil in one region, it draws the same note 
in every region.

Almost sure there's something I missed, but have tried with the 3 edit 
modes and except
search in vain thru preferences and this list archive can't find anything.

Any help welcome,
Fred