Think you misunderstand those Preferences. When you do a software capture, you have the choice to mark different options: Demonstration, Training, Assessment. You can even choose to have all of them which will create 3 different files.
In Preferences, Recording, Modes you'll see the default setup for each of those modes and you can tweak that as well. A Custom mode is also possible. That setup will decide what happens when you choose a Capture mode: one example is adding Mouse which will happen only in Demonstration mode, not in Training/Assessment.
During capture, if you keep the default settings, CP will switch to FMR (Full Motion Recording) for Drag&Drop and Mouse movement. With Captivate 6, if you want more quality for such 'video' slides, you'd better record them with the new video mode, but then you'll have to insert those recording slides yourself (Insert menu). Another tip: try in the setup for Recording to replace the default Text Captions (bitmap) by Smart Shape (activate in Demonstration Mode), they are much more editable (and vector based).