No, the old versions will not be uninstalled. Therefore, it is possible to use several versions of RFEM 5 and RSTAB 8 on the computer at the same time, which is also useful in many cases.
If you want to uninstall an old version of RFEM 5 or RSTAB 8, use the following command:
msiexec -x <old MSI package>
For a complete list of all msiexec options, use the following command:
msiexec -h