Importing and exporting versions

SNOMED CT versioning support for import

Import options have been restricted depending on the existing data in Snow Owl. This means that import options that are not suitable will be disabled (see screenshot).

• The Delta release contains modifications since the previous release and are used to update a previous version of a full release. For this reason, they can only be imported if there is already SNOMED ED CT content in Snow Owl.
• The Snapshot release file contains the most recent version of every component without any historical information. It can be imported in an empty database or if there is already an older SNOMED CT release.
• The full release contains every component and every version ever released. An import is only possible if there is no SNOMED CT content in Snow Owl.
• Create versions for each effective time: This option is only available when importing a full release. It creates a separate version for each release, which allows to switch between versions, for example if you want to work with older versions. If you run the import without creating versions, you will still be able to see historical information in the History view, but won't be able to switch between versions.

SNOMED CT import

Exporting older versions

Only the current state of the content is exported, there is no content modification during export. This means that unpublished components remain unpublished, and published components retain their publication date.

To export an older version

• Switch to the older version (Tools > Switch version)
• Verify that the selected version is displayed. The version is indicated in the statusbar on the bottom.
• Go to File > Export > Snow Owl > Select the artifact type you want to export (e.g. Value domain to Excel)
• Hit Browse to specify the file name and file path. Click Next to start the export

Specifying file name and file path for export

After the export, you can find a link to your export file.

Link to export file