Good morning, @pmarcoux ...
When you cross-list two courses together, it only moves students from one course to another. It does not move content. So, if you had two courses, A & B, that you wanted cross-listed together (all students into course A), you can do that, but students from both courses would only see the content from course A and not course B. More information can be found in these Guides:
- How do I cross-list a section in a course as an in... - Canvas Community
- How do I de-cross-list a section in a course as an... - Canvas Community
I hope this will be of some help to you. Sing out if you have any other questions about this...thanks!