I want to merge the RED polygons with the YELLOW polygons. But i want to merge the one red polygon with the adjancent polygon with yellow one. This polygons are in one Feature class but classified in atributes. I am trying many methods but it doesnt work or i dont know how to do.
Use the Eliminate tool to accomplish this. It does exactly this: "Eliminates polygons by merging them with neighboring polygons that have the largest area or the longest shared border. "