This is driving me nuts! The anomaly seems to be the dragged to targets persisting. In those drag & drop questions with only two targets that are dragged to (out of a possible eight), only the two targets that are dragged to continue to be visible in the subsequent questions. In those that have four drags to four targets, all four dragged to targets persist.
I've tried looking for bug reports at Macromedia, did not find any mention.
The test has 23 questions and is set to show 5 randomly. It may take a few run throughs for a drag/drop question to appear. Please take a look at http://mywebniche.com/test/FrontDeskTest1.html
You can download the .fla at http://mywebniche.com/test/FrontDeskTest.zip
"I am but an egg."
--Stranger in a Strange Land