The settings are not changed unless stated otherwise.
For this modification "The Settlers IV History Edition" is required.
Uplay is still needed! The app still starts the game via Uplay.
If there are problems starting the app, please add an exception to your virus scanner for the program. The scanner is i.a. working because we do not have official certificates.
Windows 7 is no longer fully supported by Ubisoft. It might work, but it doesn't have to.
Once a backup has been created, you only need to switch to the History Edition in the lower left corner. The backup will then be restored.
If in doubt, please uninstall both Launcher and Settlers IV. Delete the Uplay Games folder of TheSettlers4. Afterwards reinstall "The Settlers IV History Edition".
If necessary save the files "GameSettings.cfg", "MiscData1.cfg" and "MiscData2.cfg" in the Config folder.
They are located under "Documents\TheSettlers4\Save" and are not changed. But backups are always useful!