1. Open any your map in advanced level editor.
2. Replace map ID in page URL with the ID of a campaign level and then press Enter.
3. Press "save map as" and enter a map ID containing your login name, then press "save".
Note 1: campaign level IDs look like "c0a" (first campaign level), "c1a" (second campaign level), "c2a" (third campaign level), and so on.
Note 2: this is how you should change the URL to download, for example, first campaign level: