When you try and restart InterWorx using service iworx restart you are greeted with the following erorr: Restarting iworx (via systemctl): Failed to restart iworx.service: Unit iworx.service failed to load: No such file or directory.
The following commands fix the issue:
unlink /etc/rc.d/init.d/iworx
cp /home/interworx/etc/init.d/iworx /etc/rc.d/init.d/iworx
service iworx restart