Firebase Analytics无法按应用版本对比的问题求助

• Data Retention or Sampling: Firebase Analytics has default data retention policies (14 months for standard accounts). If your older app version's data falls outside this window, it won't be accessible. Additionally, low-activity versions might be subject to data sampling, leading to no visible data in comparisons.
• Incorrect Parameter Sending: Even if your app hasn't been updated, verify that the app_version parameter is still being sent with events. A subtle implementation change (e.g., accidental override of default parameters) could break this mapping. Use DebugView to confirm the parameter is present in incoming events.
• Backend Platform Changes: Firebase may have rolled out backend updates that disrupted the "Build" dimension comparison functionality. This is especially likely if multiple unrelated apps are experiencing the same issue.
• Filter or Date Range Conflicts: Accidental filters (e.g., excluding certain user segments) or too-narrow date ranges can exclude data from older versions. Double-check the applied filters and extend the date range to cover periods when the older version had active users.
• Project Configuration Shifts: Changes to your Firebase project settings (like re-linking to Play Store, modifying event rules) can impact how version data is aggregated, even for unupdated apps.

• Validate Event Parameters: Use DebugView to send test events from an older app version and confirm the app_version parameter is included in event payloads.
• Adjust Date Ranges: Expand the date range in the comparison view to include the peak activity period of the older version.
• Check User Activity: Confirm the older version still has active users generating events—if it's no longer in use, no data will be available for comparison.
• Escalate to Support: If you've ruled out the above factors, contact Firebase support with your project IDs and version details to investigate platform-wide issues.

内容的提问来源于stack exchange，提问作者theJosh