Although not likely th answer you were looking for, as I use PP 1.5, maybe keyframe animation could achieve your desired results.
Try highlighting the title in the timeline,than opening the Effect Controls and animate the clip by setting keyframes with the Motion parameter.
Scrub to the first frame of the title and click the Motion/Position/Toggle Animation (stopwatch) button, to create a “start” keyframe.
Position the title offscreen to the bottom by adjusting the vertical positioning value of this Motion parameter.
Next, scrub to the last frame of the title – Or click the Page Down button on your keyboard (I find this to be easier). You could also click the Go To Next Edit Point under the Monitor.
Now adjust the vertical positioning parameter to a negative value, maybe -10. Adjusting this value will create an “end” keyframe.
You should now have 2 keyframes on the title clip, one at the first frame and one at the last frame, each with a different vertical position value.
You should now be able to scrub through the title in the timeline and see it scroll.
Just a possible option.
Vince