Ok, so I am trying to move the /var/lib/tftpboot folder the "proper" way to a dedicated partition. To accomplish this goal I have setup a separate partition called /app and moved the tftpboot folder there.
Issue 1: Symlink
After I moved the folder I created a symlink from the new directory to the old directory using the ln -s /app/tftpboot /var/lib/ command. After doing this I am unable to successfully restart the service using systemctl restart tftp. However, if I just update the path listed in the service file and the config file the service boots fine.