Features in CARIS files can be imported to S-57 using the ih_f2o.xml file in C:\Program Files\CARIS\<application\<version>\modules\Feature Editing\support\Rules. You may want to refer to the file while reviewing this section.
The following graphic is an overview of the mapping file structure.

The <ObjectToObjectConversionTable> contains the Version attribute. The Version is the version number for the file.