at.editBegin( consc.edit );
at.editRemove( this, consc.as.getSpan(), consc.edit );
at.editInsert( this, consc.as.getSpan(), consc.edit );
at.editAdd( this, consc.as, consc.edit );
// if( !audioTrail.copyRangeFrom( (AudioTrail) srcTrail, copySpan, insertPos, mode, this, edit, trackMap2, bcPre, bcPost )) return CANCELLED;
at.editEnd( consc.edit );
}
if( source.validMarkers ) {
doc.markers.editBegin( consc.edit );
doc.markers.editClear( this, source.context.getTimeSpan(), consc.edit );
doc.markers.editAddAll( this, source.markers.getAll( true ), consc.edit );