Additional issue identified with LMS > Settings > Export import
After the students are brought over using the export/import feature, they no longer appear in Course > Admin by default
See screenshot below:
http://prntscr.com/fayc4g
Once we select the status field (Active/Expired) then the students show up. See below for the same course which was previously showing 0 students.
http://prntscr.com/faydj5
However the same behavior doesn't apply to students who sign up through the front end. I think this is a bug and should be fixed. Not a show stopper but definitely worth fixing.
Regards
After import please goto wp-admin -> lms -> setting s-> functions-> Sync data >
http://prntscr.com/fb6k6f
click on sync now button to sync course students data .