RightTupleMemory rtm = bm.getRightTupleMemory();
for ( RightTuple rightTuple = srcRightTuples.getUpdateFirst(); rightTuple != null; ) {
RightTuple next = rightTuple.getStagedNext();
if ( rightTuple.getMemory() != null ) {
rtm.removeAdd( rightTuple );
for ( LeftTuple childLeftTuple = rightTuple.getFirstChild(); childLeftTuple != null; ) {
LeftTuple childNext = childLeftTuple.getRightParentNext();
childLeftTuple.reAddLeft();
childLeftTuple = childNext;
}