Script creates one file owned by root instead of by me?

This has worked in the past, but now just for my icon files, it creates one owned by root instead of by me ??

#!/bin/bash
# 
#  Backup important files  
# 
#  Use gxmessage to show a message
#
gxmessage -fg red -font  'sans 50' -timeout 3 -geometry 1800x200 ' BACKING UP FILES FOR UBUNTU_MATE 16.04.3 LTS'
# Backup bookmarks file  
cd /home/andy/.mozilla/firefox/fdjfmfhj.default/
cp -u -f bookmarks.html /media/andy/MAXTOR_SDB1/Linux_Files/
zip -u ~/Documents/Ubuntu_Documents.zip *.html
#
cd ~/Documents
zip -u Ubuntu_Documents.zip *.txt *.doc *.rtf *.html *.png *.pdf *.odt *.ods *.odg *.desktop
cp -u -f Ubuntu_Documents.zip /media/andy/MAXTOR_SDB1/Linux_Files/
#
cd /home/andy/bin/
zip -u Ubuntu_Scripts.zip *.sh 
cp -u -f Ubuntu_Scripts.zip /media/andy/MAXTOR_SDB1/Linux_Files/
#
cd /home/andy/Icons
zip -u Ubuntu_Icons.zip *.png *.pnm
cp -u -f Ubuntu_Icons.zip /media/andy/MAXTOR_SDB1/Linux_Files/
gxmessage -fg blue -font  'sans 30' -timeout 2 'BACKUP TO MAXTOR SDB1 COMPLETE. :-)'
#
cd /home/andy/Desktop/
zip -u Desktop_Items.zip *.desktop
mv -u -f Desktop_Items.zip /media/andy/MAXTOR_SDB1/Linux_Files/
#
cd /home/andy/
zip -u .bash_aliases.zip .bash_aliases
cp -u -f .bash_aliases.zip /media/andy/MAXTOR_SDB1/Linux_Files/
#
cd /home/andy/.config/Thunar/
zip -u Thunar_Settings.zip uca.xml
cp -u -f Thunar_Settings.zip /media/andy/MAXTOR_SDB1/Linux_Files/
# Play a sound :-)
vlc --play-and-exit /home/andy/Sounds/Ding.mp3