If you wish to change the template of your CV or job application, you must start out by creating a new blank CV/job application with the template you wish to use.
Hereafter, you must click on the "Import" function in the upper right corner in order to transfer the content from pre-existing material into the new template. Make sure that the template you import into is empty, so it doesn't overwrite what you have already created.
1. Create a new CV
2. Select the desired template
3. Select "Empty CV"
4. Click on "Import" in the upper right corner
5. Select the CV from which you want to import the content into the new template
The same procedure applies for job applications.