Exporting test case templates to another project results in duplicates

For our projects, we use some test case templates, that contain variables like ${Condition} and ${Action}. Then, it is possible to link these from other test cases where there variables are replaced with some parameters.

When we export test cases (the linked ones and the templates) to another project (for reuse), we run into some issue:
Suppose we have a collection of test cases that used the same template(s), and these test cases are spread over multiple folders. When we export this collection to another project, the same folder structure is created in the new project. However, for each test case that links to a template, a new copy of that template is made in the same folder as it is linked in. This results in a lot of additional templates that are all similar. But this is not 'our' purpose of a template.

Is there a way to prevent this behavior?