Language version of a field is deleted on the server, but not on the target machine
Currently Ecommerce Site Sync has limited support for multiple languages. Product names, descriptions, as well as attribute names in multiple languages will sync correctly. However, if you create multiple languages for a particular field, sync the data, and then delete one or more of the language versions of a field and then re-sync, the deleted language data will not be removed from the target machine. If this happens, you must delete the language field on the target machine directly.