why is Mixpanel returning a false no record to return in insight report when you tweak or adjust the date to cover a different fixed date eg Jan 1 - Jan 30 if I decide to cover Jan 1 - Feb 5 it no longer shows the data which is not the right behaviour, how to fix and why does this happen, is this a common issue raised when using insight report kapa.ai
I'm sorry, but the knowledge sources do not explicitly mention a "false no record to return" error message specifically triggered by expanding a date range from January to February. However, based on Mixpanel's documentation, there are several technical reasons why data might disappear or show as "no data" when you adjust date ranges in an Insights report:
1. Inactive Events and Properties
Mixpanel's report dropdowns hide events that have not been fired within the last 30 days to reduce clutter [Checking for Hidden Events]. If the event you are tracking was only active in January and you have since stopped sending it, it may not appear correctly when the date range shifts to include a period where it is inactive, especially if it was never modified in Lexicon [Checking for Hidden Events].
2. Cardinality Limits
When you expand a date range (e.g., from 30 days to 36 days), you may trigger a "cardinality limit." If your report uses breakdowns, expanding the time range can increase the number of unique segments beyond what the UI can display. In these cases, Mixpanel may show a "-" or an empty state because the query returned more segments than the UI can handle [Segment Limits and Ordering].
3. Date Range Guardrails
Mixpanel enforces specific guardrails for performance. For example, if you are using "All Events" as your metric, the maximum date range allowed is 93 days [Date Range Guardrails]. While your example (Jan 1 - Feb 5) is within this limit, other granular settings (like hourly granularity) have much tighter limits (31 days) which could cause a report to fail if exceeded [Date Range Guardrails].
4. Query Result Caching
Mixpanel caches report results. If you recently imported data for February or if data was late-arriving, the UI might be showing a cached version of a previous "empty" query. You can fix this by clicking the three dots overflow menu at the top of the report and selecting Refresh Data to force a fresh query [Refreshing the Query Results Cache].
How to Troubleshoot:
** Refresh the Data: Use the "Refresh Data" option in the overflow menu to bypass the cache [Refreshing the Query Results Cache]. ** Remove Filters: A common cause for discrepancies is a filter that applies to one month but not the other. Remove all filters and breakdowns to see if the base data returns [Data Discrepancies]. ** Check Lexicon: Ensure the event hasn't been hidden by an Admin [Checking for Hidden Events]. ** Verify Timezones: Ensure your project timezone aligns with the period you are querying, as all dates in Mixpanel reflect the project timezone [Date Range].
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Let me check the knowledge base for you again. One moment! 📚
I'm sorry, but the knowledge sources do not explicitly mention a specific bug where adjusting a "fixed date" causes existing data to disappear. However, there are two high-probability reasons related to Time and Caching that could explain this behavior:
1. Query Result Caching
This is the most common reason for inconsistent results when changing date ranges. Mixpanel stores report results in a server cache to speed up performance. If you previously queried the January 1 – February 5 range before the February data was fully ingested or processed, Mixpanel might be showing you that "empty" cached result instead of querying the new data [Query Result Caching].** How to fix: Click the three dots overflow menu (...) at the top right of your Insights report and select *Refresh Data. This forces Mixpanel to ignore the cache and scan the database for the most recent events [Refreshing the Query Results Cache].
2. Project Timezone vs. Ingestion Time
If your project was created before January 1, 2023, event timestamps were stored in your project’s local timezone at the time of ingestion [Exporting Events]. If you have since changed your project's timezone settings, the "Fixed Date" window you select might be shifting the visible data into a different day or excluding it entirely due to the offset [Managing Projects].** How to fix: Go to *Project Settings to confirm your current timezone and see if it aligns with how your data was originally sent [Managing Projects].
3. Delayed Ingestion
If the data for the extended period (e.g., February) was sent via mobile SDKs or an import API, there may be a delay in processing. Mixpanel accepts data triggered in the past, but it might not appear instantly in reports if it hasn't finished the ingestion process [Delayed Ingestion].If refreshing the data does not resolve the issue, it is recommended to check Lexicon to ensure the event hasn't been hidden or marked as inactive during that specific timeframe [Check for Hidden Events].
kapa.ai is still learning and improving, please let me know how I did by reacting below.
ℹ️ Tip: Mention @kapa.ai in the thread for follow-ups or DM the app for 1-to-1 help.
I'm not sure of your exact scenario, but we did just do a date update where we allow users to select dates that are in the future. If you change your date filter to future dates, there is not yet data for those dates and so your report will not return data as there is no data to return. In your example of Jan 1 - Feb 5, you would only have data for Jan 1-5 and the remaining days of your date range will not yet have any data available to display as they are in the future and have not occurred yet. Is this what you're experiencing? If you're experiencing something else, could you elaborate further on what it is that is happening in your report?
