I have also created this same field in delivery notes/purchase receipts/and both purchase and sales invoice. The field has the same name, so I had assumed it would automatically fetch text from the Order field to the Receipt/Invoice field of the same name, but that does not seem to be the case. Do I need an explicit ‘Fetch From’ entry, even if the custom fields all have the same name?
The ‘No Copy’ was set to prevent the field from disappearing if it had no entry in it. However I will admit I do not fully understand what that setting does, disabling it does not seem to make the fields fetch.