When you say 'import' do you mean a backup was restored to the course?
If that's true, and you have the .mbz file used to 'import', you can find out much information about the backup used.
from the location of the .mbz file: tar zxvf nameofbackup.mbz file if using newer version of Moodle that defaults to using tar.gz for backups ... or
unzip nameofbackup.mbz
In the extracted listing of files/folders, you should see a moodle_backup.xml file.
Open that with a text editor and one will see info such as the following:
<moodle_release>2.6.11+ (Build: 20150619)</moodle_release>
and lines related to the original course (below just a few):
<original_wwwroot>http://site</original_wwwroot>
<original_course_fullname>Creating Student e-Portfolios with Google Sites</original_course_fullname>
<original_course_shortname>eportfolio</original_course_shortname>
'spirit of sharing', Ken