Hit Chat Limit... Now What?

I was messing around with creating a persona in chat and had a lot of conversations and back and forth modifying it. Was getting it to the point of where I wanted it and I hit the 500 message limit which I didn't know about. If I start a new chat it is from scratch. How can I get the persona and conversation context information to copy over if I am at the 500 message limit? Thank you!