i havent used walk designer since poser 5, and wouldnt recommend it for character interaction, if i wanted to create a forward walk path, then say a turn round and walk back animation, I would probably create the forward walk, export the frames, then do the turn, and export the frames, and then the walk back and export theframes again, that way if something messes up in say collisons on the turn, that is the only section you would need to tweak, then just composite the frames in your favourite movie editor.

If you are fortunate enough to have the animate plus feature in daz studio, and the pf exporter plugin function, you can export any of the animate plus collection poses and save them into your poser pose folder, they do tend to have a decent selection of semi intereactive poses