Currently, when swapping Locations with the same name and parent, URL aliases are not swapped as well. This results in situations when the Editor cannot effectively swap the Locations for a Content.
This behaviour was correct in eZ Publish 5.4.

Steps to reproduce

1. Create fresh eZ Platform installation.
2. Under "Home", create Article Content Object named "ArticleA". In the intro field, put "First Article".
3. Under "Home", create another Article Content Object named "ArticleA". In the intro field, put "Second Article".
4. Confirm that after accessing "your-site.example/ArticleA" there is "First Article" shown in the intro field.
5. Confirm that after accessing "your-site.example/ArticleA2" there is "Second Article" shown in the intro field.
6. In the Platform UI, swap the locations of these two Articles (using "Location Content Swap" from "Locations" tab).
7. Confirm that after accessing "your-site.example/ArticleA" there is "First Article" shown in the intro field. It should show "Second Article" since the Locations have been swapped.
8. Confirm that after accessing "your-site.example/ArticleA2" there is "Second Article" shown in the intro field. It should show "First Article" since the Locations have been swapped.