After doing a clean install of Mavericks, I needed to import my rules from my backup. The rules are all in the ~/Library/Application Support/Hazel which makes them easy to find. Unfortunately, you can't preview the rules before importing them nor can you see which folder they were assigned to. Thus, I had to import all of the rule files. This lead to lots of repeats and they are imported to the currently highlighted folder. I came up with the idea of creating an "All Rules" folder and importing them into it. I created my folder within the Hazel folder. After importing all of my rules, I sorted them alphabetically. This allowed me to find duplicates easily. Now when I apply rules to a new folder, I can find my rules quickly.