Was still logged into PayPal but it was in a background tab, think it logged me out due to inactivity around the time the "update" email was sent. Was using the new invoice interface to send the invoice. When logging back into my account, the PayPal invoice activity log shows that the invoice has indeed been updated. Seems to be no actual change made to the invoice itself. The update email was sent from a recognisable PayPal address and seems entirely legit. Anything to be concerned about?
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