1. Download the Whitelist from cloud.
2. Not available now.
3. Backup your current Whitelist to C:\users\%Username%\AppData\local\temp
4. Use the downloaded Whitelist to update your whitelist and delete browser history. New Whitelist will be effective immediately.
Download the tool: (attached)
Disclaimer: Use this tool on your own risk. You may examine the code before use. We are not responsible in case fault behaviour occurs.