Please upgrade here. These earlier versions are no longer being updated and have security issues.
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Migration from ProxyConnect
This discussion is related to the Vanilla jsConnect addon.

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We use the same association, but you'll need to make your jsconnect use the same client ID as you used for proxyconnect. Do this right before launch.
Backup your DB!
Look in
GDN_UserAuthenticationProvider
and you should see a row with proxyconnect somewhere there.Make note of the AuthenticationKey.
Delete the row.
When you add the jsconnect connection use that AuthenticationKey for the client ID.