I have a WordPress install that has a ton of categories. I want to convert some of these categories into a custom taxonomy. For example, I have:
Categories:
- Category A
- Subcategory 1
- Subcategory 2
- Category B
- Subcategory 1
- Subcategory 2
- Category C
- Subcategory 1
- Subcategory 2
And I would like to make Category C and all of its subcategories into a completely separate custom taxonomy. Is there a way that I can make this conversion, while keeping the relationships between Category C and existing posts intact?
You can create whatever new taxonomies you want to by adding register_taxonomy() function in functions.php
After that you can simply assign all the posts related to Category C to that custom taxonomy using Convert Post types plugin.