This thread is resolved. Here is a description of the problem and solution.
Problem: The portfolio items aren't show in the secondary language
Solution: It seems that you are filtering the portfolio items by ID using the incorrect IDs. If you visit the category page of the portfolios you will see the ID of each portfolio item in the URL of the edit link. Please add the right IDs to the Visual Composer element.
This is the technical support forum for WPML - the multilingual WordPress plugin.
Our next available supporter will start replying to tickets in about 1.27 hours from now. Thank you for your understanding.