The buttons on your remote will be programmed according to a particular protocol, chosen by its manufacturer. Encore clearly does not have code to generate the necessary signal to enable the other three buttons to work - and it only has the one, for top menu. "Top Menu" will be hard-coded to activate the top menu button on the remote.
There have been other instances where a particular disc feature would work in the Encore preview, but would not work with a burnt disc in a set top player. One such used to be Chapter Playlists for Blu-ray. With CS4 and 5, they would work in preview, but not on the disc. Only with CS6 did we get this feature properly operational.