Connecting Smart Builds as build in/build out partners

Question

I asked this question earlier in the thread, but felt I should simplify it: In Keynote 5 (iWork 09), I'm unable to connect two smart builds with a build in/build out as I could in Keynote 4 (iWork 08). By connect, I'm referring to this:
In Keynote 08, this worked perfectly, because I would simply highlight the "build in" of the second Smart Build in the Build Order drawer, and below "Start Build" I would select "Automatically with Build 3" from the pull-down menu. This would, in Keynote 08, put a small line going down and to the right, showing its association with the previous step. And the flipped item exiting the screen on the right would be in obvious motion with the as-yet-unflipped item just entering the screen from the left--though they didn't get near each other.
When I attempt to select "Automatically with Build 3" in Keynote 09, it momentarily allows me to select that phrase when I pull the menu down, but it instantly reverts to "Automatically after Build 3" when I let go, as if to say "You can't do that, son!" It stubbornly refuses to group its action (move in) with the previous step (previous item's move out), even though in Keynote 08 it worked perfectly. In fact, I took the original file to a machine on my network that has Keynote 08, and it still works perfectly.
See my earlier post here for additional info: http://discussions.apple.com/thread.jspa?threadID=2793648&tstart=0

Answer 1

Thank you Mark.  I had my build in marker after and my build out marker before the animation.
I did manage to fix to the problem, or perhaps it is more accurately described as a workaround since I really don't understand why my original approach did not work.  The way I got it to work was to create a clone of the effect source and apply the behaviours to the clone.  Now the animations work as they should.
Thank you for taking the time to provide assistance.  It is appreciated.