EXFO iOLM - Manual (Page 45)

Setting User Preferences
intelligent Optical Link Mapper 39
Customizing the iOLM Report
7. If you have the loopback (LB) software option, under Loopback, select
the checkbox if you want to generate a report with all links combined
in one report.
Tap Revert to Factory Settings to remove all the changes and apply the
default status.