I have a shapefile composed of many polygons. I want to merge/combine/dissolve some adjacent polygons that I have selected within the shapefile into one polygon without any slivers or lines left in between.
I do not want to extract the polygons. I just want to combine the attributes of different adjacent polygon features within the existing shapefile
Essentially I want the below image but not extracted and separate, I want to do the merge internally in the shapefile
