Zend certified PHP/Magento developer

How do I correctly move products and categories between stores in magento1?

I currently have a magento 1.9 installation which uses two stores. I’m at the moment trying to move a category (as well as the subcategories and products) from one store to the other but I’m running into some issues. At the moment, several subcategories are missing and don’t show properly on the category page.

What I’ve tried so far is to simply move the folder, and change the file used for the static block to ensure that they’re the same between the two sites. What else could I be missing?

Thanks in advance.