In max if you select one edge on the top of a cylinder and click loop it doesn't select beyond that original edge you selected. I usually get round this by selecting the top cylinder poly, holding shift and clicking edge sub-object mode but i'm just curious as to why this doesn't seem to work, it seems so simple. Is it…
Max's edgeloop detection checks at each vertex to see if there are three new edges coming off the vertex (it already has the previous edge), and then it selects the middle one, and repeats. With the top of a cylinder, there are only 2 edges (the side and the loop edge) so it fails. If you add a cap segment so the edge of…