Can I export more than 90 days from the Chat History interface?
No, when exporting from the Chat History interface there is a 90-day range limit. You can export all chat data in 90-day increments. For example, you can export chat data from March 01 to May 28 and export another from May 29 to August 26. To export more than 90 days of chat history, use the Zendesk Chat API.