Installation of server and client components of BI 4.x on the same physical machine

Hi,

We are going to proceed to an upgrade from our SAP BO environment from 4.2 (SP7 Patch 2) to 4.3 release. We will start on a sandbox cloned from an existing environment.

Checking the notes we have noticed that this 4.3does not allow "Installation of server and client components of BI 4.x on the same physical machine". Despite not being a recommended practice we use to do that (reasons are another history).

Therefore my question is: should be uninstall the existing 4.2 Client tools on the server before the inplace upgrade of we can simply leave there (not using client tools of course, as versions will be different)?

Regards,

Alfons