Hi, I've upgraded my contract following the documentation at this link: OpenZeppelin Upgrades: Step by Step Tutorial for Truffle. After the upgrade the events of my contract are gone. Am I missing something?
Do you mean it no longer emits events when you make function calls to the upgraded smart contract or do you mean historic events are no longer visible?
The events should emit via the upgraded contract address.
can you provide a link to you contract code that you upgraded to? If you're new contract doesn't implement the EVM events that your old contract had, they won't emit.