Paypal - Refunds - Manual Credit Note


My VAT period is starting from Jan 19 going forwards.

I have a few Paypal Transactions - that are refunds the items were purchased back in December but then refunded in January.

I have no accounts uploaded for Dec 2018 am i right in think i just create a manual Credit Note against the Paypal account?

What do i do to the Refund Transaction Tag as it will not allow me to tag it to the refund? Do i delete it?

Thanks in advance.