I have the same situation. Thankfully I have been able to send certificates that have been archived for years. I find the easiest way to do this is go to contacts, type in their name, click on contact history then transaction history. It gives you a list of everything they have registered for, with that email address, no matter how long it has been archived for. Click on the event and go from there to download and send them their certificate. I haven't had to reopen an event to send a certificate. I hope this helps!
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Deanne McCartney
Business Manager
Learning Forward Texas
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