I can presume that you are working to import in Moodle 1,9.
- However, where are your questions coming from ?
WEBCT import could be solution... - Do you really need that they have the same datasets?
- In 1,9 the data even if coming from the same datasets, will not be synchronized in a given quiz unless you have access to the code and can modify it.
i.e. if you use parameter {a} in question 1 the value of {a} will not be the same in question 2 in the same quiz.
Pierre