I have a drupal project working in the server home directory. I want to move this from the server home directory to a subdirectory to make way for other drupal projects.

I move the whole drupal project from `www/var/html` to `www/var/html/old_project`

I change the `$base_url` in the drupal project settings to `http://localhost/old_project`

In the web browser I navigate to localhost/old_project. The home page displays but image links are broken. Links are broken to any other page I navigate to on the site. I can see that the urls are missing the .../old_project/...' part of the url.

Why is it omitting this and how can I fix it?

Many thanks