LoadMovieNum on levels with transitions

Flash 8

I am trying to load a movie onto layer 1 (over a picture) and I have that down.

The effect I am trying imitate can be found at:
http://www.hillier.com/portfolio/
click one of the categories, then check one of the individual projects after you come to the category page. Then click “read more” at the bottom right-hand corner.

That part I’ve got.

Then click “back” and the text rolls up and disappears.

My problem is this: I am using “loadMovieNum” and two separate external SWFs (one to unfold the text and a second to roll it up). THe problem is that there is a jump when the first SWF is unloaded (and all the SWFs disappear) and the second SWF begins.

I checked out Kirupa’s tutorial on transitioning between external SWFs. Is this the answer, just use the single button? Seems rather complicated, but I like the idea of having just one external SWF that pauses at the midpoint and then continues after the button is released a second time.

Or is there a simpler way? I have about 90 projects to do.