[Les]

Thanks Chivas and Urizen. I'd have to see if using the beta patches on the original version of the sim would work, as the official final patches weren't available outside of Steam as far as I know. Probably wouldn't work, but I might give it a try at some point.

Edit - Just saw Blackdog's post about the cumulative, not incremental nature of the patches/updates. So it looks like I could only roll back from a current beta to it's preceding official version, or roll forward from an older official version to the beta that immediately followed it. Still, I do wonder if that applies to individual elements within the beta patches. Not going to hack into anything, but maybe some user accessible stuff can actually be copied back and forth without messing up the core game itself. I don't know.

Ideally, the final non-beta patches would have been provided for download by the developers as well as the beta versions. That way you'd still have to use a legitimate Steam copy as your base, and could just roll backwards and forwards to your hearts content, not having to rely on downloading the whole content from Steam (and only the latest version of it) and saving it every time.