We're using Examview 6 and then exporting as Blackboard 6-7, then importing the res00000.dat file into Moodle using the Blackboard import (not Blackboard 6).

We find that if a matching questions use the same answer more than once, then the question is not imported for the 2nd occurrence or greater of that answer (for example, if 'blue' is the answer for three of the questions in the same matching question, then only the first instance of 'blue' is used, and the other sets that have 'blue' for the answer are not imported.

We also find that distractors are not imported. In other words, if 'red' is a possible answer, but is not matched to a question, then it will not be imported.

I have attached a sample .dat file.