1. Create a backup for savegame.xml. Just rename the original BACKUP.xml and do not change the downloaded one.
2. Go to C:\Users\User\AppData\Local\Teardown and there you will find the savegame.xml. Rename that BACKUP and drag and drop the downloaded one in that place.
3. Put the backup.xml in desktop so you won't lose it.
4. You are ready to go!