of TWO entries at one... string Windows: -hkcu/ -/appdata/ OSX ...
and how not to made it Windows -hkcu/ Windows -/appdata/ ...
There is examples as existed articles, but it nw should be finded manually. And few games have two such entries. AppData for appdata config files and separate saves as it indended to be (Wc3 Classic, not normal one, use Documents and separate SavedGames for user content, but configs still in WinRegisty, where can be edited location for documents path)
So it should be exampled here directly, or provided link to such game. Here such example http://pcgamingwiki.com/wiki/Warcraft:_Orcs_%26_Humans
BTW, Warcraft 3 Classic atricle, beign dedicated to exactlty Classic version 1.31.1\+PTR, not describe that it use two path for user files (savedgames and documents for maps\campaign, that missed cause it indeed not a saves, but should be described anyway, especially cause user should find download and put DemoCampaign file to restore this content in Classic)