Describe the bug
When uploading a template, the default action is to preview to ensure that your template won't overwrite anything important. However, if you are satisfied with the import, you must then return to the import screen, select your file and then upload it again.

Expected behavior
After previewing, there should be an option to import the template immediately. This may be best to be disabled unless a checkbox has been ticked to confirm that the template is OK (especially if there is something being updates, not just exists/new).