Replace Categories
You can use the CategoryReplace action to replace a category with another category. For example:
action=CategoryReplace&FromCategory=123456789012345&ToCategory=98765432109876&BuildNow=True
In this example, the IDOL Category component replaces the 98765432109876
category with the 123456789012345
category. The BuildNow parameter instructs Category to build the categories immediately, so that they become active. You can also activate the category at a later point by using the CategoryBuild action.