This can only be done via our web app (notes.fieldmargin.com)
Go to the Fields Tab
Click 'Edit Fields' - the blue writing at the top of the fields list
Click on 'Copy Previous Year'
A pop up will appear making sure you would like to proceed - this will overwrite any sub-fields or field usages currently set in that Farm Year. If you want to proceed, click on 'Yes, I want to continue'
You will then have the option to copy sub-fields or only use the main field boundaries - select whichever you prefer
Next, choose if you would like to apply the same field usages you had in the previous year.
The buttons will then go grey - please wait while sub-fields/ usages are copied.