Worked on the opentofu/terraform-provider-aws repository to address a reliability issue in S3 file synchronization deletion when a prefix was specified. Focused on backend development using Go, AWS, and Terraform, the solution involved retrieving the relevant filesystem prefix and applying it within the import data rules. This approach ensured that delete operations respected user configurations, preventing failures and reducing operator downtime. The update improved data lifecycle integrity for S3 sync configurations and maintained compatibility with non-prefix setups. By aligning the delete logic with actual filesystem structure, the work enhanced code maintainability and reduced the risk of configuration errors in production environments.