Observed Signal · Jul 26, 2026 · Technical Release · Source: DEV Community · Impact: 2/5 · Sentiment: Neutral
TestRail to Zephyr Scale Migration: CSV vs REST API
This technical guide explains key considerations for migrating TestRail data into Zephyr (formerly Zephyr Scale) in 2026. It highlights that SmartBear has renamed Zephyr product lines (which can cause confusion), that the CSV import only transfers test cases and fields (omitting test cycles, execution history, attachments, and Jira issue links), and that the Zephyr Scale REST API is required for a full migration. A common API error stems from Jira Cloud using an internal accountId to identify users while TestRail uses username/email; provisioning users and building an accountId mapping table before migration prevents 400 errors. The article also notes Atlassian stopped selling new Data Center licenses on 30 March 2026 (EOL 2029), making Cloud migrations more likely and meaning Cloud vs Data Center APIs differ.
Practical migration guidance for software teams: clarifies product renames, CSV import limits, necessity of the REST API, user identity mapping issues, and impact of Atlassian Data Center sunset on migration timing.
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Key Takeaways & Evidence Grounding
- Atlassian stopped selling new Data Center licenses on 30 March 2026; full end-of-life is set for 2029.
- SmartBear renamed its Zephyr product line: the flagship formerly called Zephyr Scale is marketed as "Zephyr — Test Management and Automation for Jira" and Zephyr Squad is marketed as "Zephyr Essential — Test Management for Jira."
- Zephyr Scale's CSV import only migrates test cases and their fields; it does not migrate test cycles/test plans, execution history, attachments, or Jira issue links.
- Zephyr Scale's REST API is supported by SmartBear and is required to migrate test cycles, executions, attachments, and issue links.
- Jira Cloud identifies users by an internal accountId while TestRail identifies users by username or email; passing TestRail usernames to Jira API fields referencing users commonly results in a '400: user not found' error.
Connected Companies & Entities
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