Unfortunately you can't, just keep both of them running.
It does look like this should be possible, as if they started to build this in but didn't get it finished. Hopefully they will get round to it at some point.
V25 & 26 (fully patched); Mac Ventura, MacBook Pro M1 Max
It is not possible to install BIM Server 20 on top of your current BIM Server. This means it can be installed on the same hardware alongside with older versions, but it will be a separate application and has to be installed into a separate folder.
At the beginning of the article it talks about the fact that there have been several developments to both the BIM Server and the ARCHICAD side. Maybe this is a reason why ARCHICAD 20 BIM Server cannot be installed in the same folder as previous modules because these new developments made it incompatible with earlier version in this regard? (Just a guess on my part.)
Loving Archicad since 1995 - Find Archicad Tips at x.com/laszlonagy AMD Ryzen9 5900X CPU, 64 GB RAM 3600 MHz, Nvidia GTX 1060 6GB, 500 GB NVMe SSD 2x28" (2560x1440), Windows 10 PRO ENG, Ac20-Ac27
