Understanding Mixpanel's Legacy ID Management and Distinct IDs
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In my Mixpanel project, the Merge ID setting shows: "This project does not have ID Merge enabled." This means my project is using the Legacy ID Management system. However, in the data, I see that some distinct_id values have a $device: prefix. Can you explain what this means under the Legacy ID Management? Also, I thought that in Legacy ID Management, the distinct_id does not change until the user logs out. But in my data, I see a single distinct_id associated with more than two different user_ids. Can you help explain why this happens?