Do old legacy events disappear or become not quarriable?

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Based on the knowledge sources provided, I can answer your question about legacy events in Mixpanel.Old legacy events do not disappear or become unqueryable in Mixpanel. However, there are some important considerations regarding how these events are displayed and accessed in the Mixpanel interface:1. Events older than 30 days: Mixpanel's report dropdown menus hide events that have not been fired within the last 30 days. This is done to reduce clutter from events that are no longer actively firing. However, these events are still available in the project's raw data, just not visible in the UI dropdowns Check for Hidden Events and Properties.2. Resurfacing old events: To make an imported event, event property, or property value that's older than 30 days show up in the dropdowns again, you can fire a single instance of that event, property, or property value. This will resurface the data in the UI Check for Hidden Events and Properties.3. Searching for old events: If you know the name of an old event, you can search for it by typing the name in the dropdown menu (case sensitive), even if it's not visible in the dropdown list Check for Hidden Events and Properties.4. Historical data validation: For historical events older than 30 days that don't show up in Lexicon or the Events page, you can use the Insights report to validate and query this data. You can filter by specific properties related to warehouse imports to access these older events Post-migration data validation.In summary, old legacy events remain queryable in Mixpanel, but they may not be immediately visible in the UI dropdowns. There are methods to access and validate this historical data when needed.

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