Not a lot of text needed. The configuration should be stored in $XDG_CONFIG_HOME/terminator/ instead of $HOME. (In most cases this will default to ~/.config/terminator/.) As more and more applications become compliant, it will be easier and easier for users to backup any relevant configurations and move them to new accounts. It allows system admins to set remote configuration directories rather than having to remote full home directories. And the advantages go on from there. Hopefully fixing this early will alleviate any migration issues.