# LaunchDarkly: Issue with Experiment Results in case of Flag Variation edits

- Impact (vendor’s label): minor
- Status: resolved
- Started: 2026-04-29 20:19 UTC · Resolved: 2026-05-01 00:09 UTC · Duration: 28 h
- Updates: 4 · Affected components: Experimentation (core functionality) - Experiment results analysis, Experiment results analysis, Experimentation (core functionality) - Experiment results processing, Experiment results processing
- [Vendor status page: https://stspg.io/x5gbm9tnzvxs](https://stspg.io/x5gbm9tnzvxs)
- [Company: LaunchDarkly](https://rewindex.com/company/launchdarkly.md)

## Timeline of updates

- **investigating** 2026-04-29 20:19 UTC: We are aware of an issue affecting some customers that may result in sample ratio mismatches (SRMs) or empty experiment results if flag variations are edited between experiment iterations.
- **identified** 2026-04-29 20:49 UTC: We've identified the issue and are implementing a fix for this behavior.
- **monitoring** 2026-04-30 00:04 UTC: We've released a fix to prevent this issue in new experiments and iterations. We're working to resolve this issue for experiment data recently processed.
- **resolved** 2026-05-01 00:09 UTC: We have validated a fix to resolve all remaining experiments with inaccurate sample ratio mismatches (SRMs) or empty experiment results. The vast majority of experiments and experimentation customers were not impacted.


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Canonical: https://rewindex.com/company/launchdarkly/incidents/nxpq0rg7y9tf · Markdown: https://rewindex.com/company/launchdarkly/incidents/nxpq0rg7y9tf.md · JSON: https://rewindex.com/api/v1/companies/launchdarkly/incidents/nxpq0rg7y9tf · Generated 2026-10-18T10:32:26.817Z