Upgrading 9.5 32bit on a 64bit machine

I have WL Pro 9.1.0 build 684 installed on my (64 bit) machines. I’m attempting to upgrade them to WL Pro 9.5.25, but the installer doesn’t see an existing 64 bit version. Is there a way to force it to upgrade the 32 bit version? Or, maybe the question should be, is there a way to get the Download Assistant to download the 32 bit version?

The point is that I’m happy enough with my 32 bit collection of plugins and don’t yet want to switch over.

WaveLab 9.5 is 64 bit only.