As described in EZP-16847, if you import a package and the main language of the destination site is not the same as the original one, the secondary translations will be lost.

Steps to Reproduce

• Install a site and set it to have English as main language, Portuguese and German as secondary ones.
• Create a new article in English and add translations to Portuguese and German
• Create a package and export the article in it
• Install a site and set it to have Portuguese as main language, English and German as secondary ones.
• Import the package created in previous step
• Confirm the imported object will have only one translation