Cereal

My favorite cereal disappeared a few months ago. Literally. It went missing from store shelves. I couldn't even find evidence of it online. Yesterday evening I was walking through the cereal aisle looking for my "replacement" favorite cereal and spotted my old favorite in a newly designed box! Of course I bought a box and ate some this morning. The cranberry goodness was still there, the taste, the texture were all the same. I don't get it. Why did Post yank the cereal entirely just to bring it back months later with a fancy new design slapped on the front?