I have a problem with creating a new content type in Drupal 7.
I have an existing content type, say ‘cats’.
I renamed ‘cats’ to ‘cats_old’ (both the human readable name and the machine name) and am trying to create a new, different content type with the name ‘cats’, but Drupal just updates ‘cats_old’ and doesn’t let me create a new content type called ‘cats’.
Is there a know issue/fix for this?
I replicated your scenario it happened with me as well. I found out that ‘cats’ content type is not showing in content type list or add content page but there is an entry for ‘cats’ content type in ‘node_type’ table. I don’t understand what the exact issue is but there is a Node Convert module which may help you in converting the node from current content type to another type and transferring content type fields as well.