Feed Items Creating But Not Displaying

I've recently had to move my drupal installation to another database.

Since moving Feeds isn't working properly. It will create feed items which will appear in the database and look pretty much as expected but they do not display in my website.

When I go to the "content" page I see an option to filter for for "feed items" but there are none in the list at all.

Any ideas how to solve this?

Thanks