Thanks George and Craig.  Appreciate your help.

Just wondering though, if I've not misunderstood -  the 5 courses missing from the report are relatively new.  They were certainly created after Audience-Based Visibility was turned on.  What is consistent with these courses, but is probably coincidental, is they are the only courses that contain > 1 SCORM module.  Filters selected in the report is to show visible ('Yes') course with SCORM or LTI as an activity.

Anyway, look forward to the fix being released.

Thanks again, Michelle