Change Existing Favorite App

I use my favorite apps as the most used app with it's folder being a category for similar apps. But sometimes a favorite app changes and then I have to recreate the associated folder with all the similar apps. I would like to be able to change a favorite app without losing the associated folder. eg. A favorite could be my texting app. Then I put all the other messaging apps in the associated folder. Then one day I realize that I use WhatsApp the most and would like to just change the texting favorite to WhatsApp without losing the folder containing all the other messaging apps.