Copy only differing files from one location to another location. (A|B = B-A)

extract_differences.sh

#!/bin/bash
SOURCE=source/
DESTINATION=destination/
DESTINATION_DIFF=destination_diff/
DIFF_FILE=differences.txt
DIFF_FILE_TMP=differences_tmp.txt

diff -bBqTrqN $SOURCE $DESTINATION >$DIFF_FILE
sed 's/Files //' $DIFF_FILE > $DIFF_FILE_TMP
sed 's/ and .*$//'  $DIFF_FILE_TMP > $DIFF_FILE

rm $DIFF_FILE_TMP
rsync -av --files-from=$DIFF_FILE ./ $DESTINATION_DIFF