PortableApps has recently released proven otherwise, it keeps calling it "Kee Pro Safe Portable 2" or "Kee Professional Safe Portable".
I'll quote from https://kee.info/devstatus.html#classiro :
During the initial development of 2.x (i.e. while there was no public alpha version available), it was called "Kee Professional". The current 1.x version should be renamed to "Kee Classic". This naming should emphasize that 2.x isn't simply the successor of 1.x. Shortly before the first alpha version was released, there were long discussions about the naming and we finally decided to call the new version "2.x".
Also from https://kee.info/compare.html :
Kee is available in two different editions: 1.x and 2.x.
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2.x makes it seem like a different version of the same app. It's really a different app as it was rewritten. They use entirely different settings and don't use the same databases (Kee 2 can do a one way import of a kdb file) and both apps are being maintained independently. The publisher has no issue with our current naming. If I rename it anything, it will be Kee .NET but this is unlikely as I'd have to change the current AppIDs of KeePortable and KeeProPortable.
Sometimes, the impossible can become possible, if you're awesome!