To copy rates from one unit to another click on the ‘copy rates to another unit’ button at the top of your finished tariff. The pop up below will appear. Choose which unit you want to copy the current tariff to. If you are copying between tariffs make sure you have created the target tariff before you try to copy the rates.
You can now copy rates from one year to the next, and decide if you would like to change the date to X number of days back or forward for the next year using the 'Modifications' tab on the 'Copy Rates to another unit' tab.