> ## Documentation Index > Fetch the complete documentation index at: https://docs.abbyy.com/llms.txt > Use this file to discover all available pages before exploring further. # Switch between skills and skill versions > Overview of how to switch between different skills and skill versions based on access method. This overview compares how to switch between skills and skill versions depending on how users access the skill. For detailed procedures, follow the links in the table. | Case | API or connectors | Process skill | | :------------------------------------------------------ | :--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | :--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | **Update the Classification/Document skill version** | Publish the skill. Users are switched to the new version automatically. [Edit a skill that is available in production](/vantage/documentation/skill-designer/skill-design/standalone-skills#edit-a-skill-that-is-available-in-production) | Publish the skill, update the Process skill's reference, then publish the Process skill. [Edit a skill after documents have been accumulated](/vantage/documentation/skill-designer/skill-design/process-skill-scenario#edit-a-skill-after-documents-have-been-accumulated) | | **Roll back to the previous version** | Delete the latest skill version. Users are switched to the previous version automatically. [Roll a skill back to a previous version](/vantage/documentation/skill-designer/skill-design/standalone-skills#roll-a-skill-back-to-a-previous-version) | Either delete the latest Process skill version, or create a new Process skill version that references the older Classification/Document skill version. [Roll back or switch strategies](/vantage/documentation/skill-designer/skill-design/process-skill-scenario#roll-back-or-switch-strategies) | | **Switch to another Classification/Document skill** | Get the new skill's ID (via Vantage API or from the end of the URL shown when editing the skill in the Skill Editor), then replace the old ID in your API calls or connector settings. | Edit the Process skill's **Classify** or **Extract** activity to reference the new skill, then publish the Process skill. Users are switched to the new Process skill version automatically and access the new referenced skill through it. | | **Transfer a new skill version to another environment** | Publish the skill, export its latest version, switch environments, and import it under the same name with **Create new version**. The skill ID does not change across environments, so API calls and connector settings need no updates. [Continued development using separate environments](/vantage/documentation/skill-designer/skill-design/continued-development) | Either transfer just the skill and update the Process skill's reference in the target environment, or transfer the Process skill with its embedded skills. Either path ends with publishing the Process skill in the target environment. [Continued development using separate environments](/vantage/documentation/skill-designer/skill-design/continued-development) | ## Related topics Choose a scenario for developing and managing skills already in production. Develop Classification or Document skills used directly via API or connectors. Develop Classification or Document skills referenced by a Process skill. Develop and tune skills in a sandbox before transferring to production. How Vantage versions skills and how to view, edit, and delete versions.