GroupWise Admin console reporting wrong client version

We upgraded from GW 18.5 to 23.4.

After we upgraded the clients the GW Admin console is still showing version 18.
We also have a third party inventory management server (Quest KACE) and that is also still reporting the client version as 18.

Is this a bug or is there something I still need to do to get the version 23.4 client to report correctly?