flash actionscript: AFAIK flash doesn't keep track of whethere a mc comes from a 'duplicate'
command.
A solution can be: store all the mcs created by means of
'duplicateMovieClip()' in a
data structure (e.g. array) and then you can remove all of them in a for loop
like:

var dup = new Array(); // here a list of the mcs duplicated

function removeAllDup (ar) {

for (var i= 0; i < dup.length; i++) {
dup[i].removeMovieClip();
}

}

remoreAllDup(dup);

HTH,

-c.

Is there an easy way to remove all "duplicated" clips, i.e. those that have
been created using the
duplicateMovieClip() method from one or two master clips?

Until now I have tried to delete them one at a time.

Thanks
Geoff