Lost key commands

Dorico have just resetted the key commands on its own to the factory settings. Any way to get them back (other than manually)? And for possible future bugs, backup or syncing more workstations - is there any option for import/export?

Yes, there is a folder, where your personal shortkeys/key commands are being saved into a file. The location depends on your operating system. A search in this forum will tell you the location.
For macOS: Key commands which I can’t find - #6 by MarcLarcher