DigiDesign Pro Tools Reference Manual page 276

There are a few things to consider when select-
ing, copying and cutting, and trimming MIDI
regions:
When cutting or clearing a region or region
◆
group selection that includes a note's start
point, the entire note is removed. This is even
the case when only a portion of the note (that
includes its start point) is selected.
When copying or cutting a region or region
◆
group selection that includes a note's end point
(but not its start point), the note remains and
overlaps the edge of the region.
Cutting a MIDI region with note overlap
Similar rules also apply when MIDI regions or
◆
region groups containing MIDI regions are
trimmed with any of the Trim tools. If the MIDI
region's start point is moved beyond a note's
start point, the note is removed. If the region's
end point is trimmed so that a note's start point
is within the region but its end point is not, the
note remains and overlaps the edge of the re-
gion.
264 Pro Tools Reference Guide
When moving and placing MIDI regions with
overlapping notes, the notes always move with
the regions. When placing MIDI regions with
overlapping notes next to or near another re-
gion, the overlapping notes extend into the ad-
jacent region.
Nondestructive MIDI Editing
While editing audio regions is usually nonde-
structive, this is not always the case for MIDI re-
gions. For instance, if a MIDI region resides in
just one track at a single location, editing for
that region is destructive. This means that alter-
ing the pitch, duration, or placement of notes in
Notes View permanently alters the region.
However, when editing a MIDI region that ap-
pears elsewhere, in the same track (at another
location or in a different playlist) or in another
track, the editing is nondestructive and creates a
new auto-created region. To go back to the pre-
vious material, drag the original region from the
Region List, or return to a previously saved play-
list.
One way to safely return to a track's previ-
ous state is with playlists. Before you edit
notes, trim regions, or rearrange the order of
regions, make a duplicate of the track's ex-
isting playlist and instead work with it (see
"Playlists" on page 270).
To apply edits to all instances of a MIDI re-
gion, enable Mirrored MIDI Editing mode
(see "Mirrored MIDI Editing" on page 461).