Hi,meowmeowmeow!
Try copying the LC4DBeyond folder of Cinema4D along with all the files to the new version folder.
For example from here
C:\Program Files\MAXON\CINEMA 4D R19\LC4DBeyond
to here
C:\Program Files\MAXON\CINEMA 4D R23\LC4DBeyond
Please, let me know if your question has been resolved.