Can I import a used project?
The 3DEXPERIENCE platform does not support importing used projects.
Can I remove a used project but keep the references?
not support recovered elements. Thus, you cannot remove used projects while keeping the references. You only have the option to remove a used project together with its references, as shown below:

I cannot open a project that uses other projects and see a message that a used project is missing. Why?
If you do not have access to a used project or it is deleted, you cannot open the main project. You must have access to all content that is used in the main project.
Why can I not see the option to export packages to a new project?
The 3DEXPERIENCE platform does not support exporting packages to a new project.