Terminalski stores all its essential settings such as address book entries, SSH private keys and keyboard mappings to its 'Home Folder'. Go to [ Settings ] » [ General ] » [ Home Folder ] if you want to change it. You can freely set it to any folder including a network shared folder or a virtual folder for your cloud storage (ex. OneDrive).

All in all, if you want to back up and restore Terminalski settings, you simply need to focus on managing the Home Folder. You can also easily share Terminalski settings across multiple computers just by selecting the same Home Folder.