tdtool tellstick keys

[hakelm]

Of course it happened, a disk crash on the little raspberry pi that controls and monitors a lot of things for me, so I have set up a new one.
I did, however, manage to save a lot of data from the old disk and now I would like to use my old tdtool tellstick keys instead of having to retrain all my Nexa devices.
Where are the keys? Obviously not in tellstick.conf.
How do I reactivate them on the new installation?
Thanks in advance for any tip.
H