Hi Nigel
The 'In progress' is a course status - the course status field is not one that is available in the Record of Learning report . This is available in the course completion report.
The course progress measures the percentage of the course activities that have been totally completed so the in progress ones don't count.
It is possible to add an activity in the course that has a completion criteria of viewing the activity . This activity can then be added as a course completion criteria so would show some progress on ROL for viewing an activity.
Regards