Exactly!
I think that this could be a issue only in a 64bit machine, where you decide if you want to open a metaframe with the 32bit or with the 64bit version.
But in a 32 bit machine, you can approach that problem during the setup, changing the string of the application in registry key value. In fact, in a 32 bit machine there is only one version of the application, so you perfectly know at the setup what is the version you are installing and which string to write in the registry keys.