My assistant disappeared after I changed the ChatGPT version from GPT-4o model to gpt-4o-2024-08-06

I received an email talking about the new version of ChatGpt and when I changed the assistant version from GPT-4o model to gpt-4o-2024-08-06 my assistant was replaced by an existing assistant.

Did this happen to anyone? How do I get my old assistant back?

Are you referring to this email?

On Wednesday, October 2nd, the default version of GPT-4o will be updated to the latest GPT-4o model, gpt-4o-2024-08-06.

The latest GPT-4o model is 50% cheaper for input tokens, 33% cheaper for output tokens and supports Structured Outputs. To explore the new version now, specify gpt-4o-2024-08-06 as the model parameter in the API.

If you continue to use gpt-4o as your model parameter, it will automatically update on October 2nd. To keep using the older version, specify gpt-4o-2024-05-13 as your model parameter instead.

Thank you for being a valued member of our developer community.