Beware, Claude Code deletes >30 day old transcripts. Anthropic won't fix it (github.com)

Users of Claude Code are facing a significant issue, as the application is automatically deleting conversation transcripts older than 30 days due to a default setting called cleanupPeriodDays. This bug, which lacks any warning or disclosure upon installation, has led to the loss of valuable conversation histories critical for ongoing research and development. Users have reported missing extensive logs that capture essential design discussions and debugging contexts, effectively erasing the reasoning trail associated with their work. The incident underscores the need for better user controls and transparency in AI/ML tools, especially concerning data retention. The community is calling for modifications such as changing the default setting to prevent data loss, providing explicit user consent for auto-deletion, and making the configuration option visible. In the interim, a workaround involves manually adjusting the setting to extend the retention period, but this fix highlights a significant oversight in user experience design that could affect productivity and data management practices in collaborative research environments.