SYWFCU returns "no custom reports found"

In the process of upgrading from 4.50 to 2018.  My custom reports migrated to my 2018 installation and are in MAS90\MAS_XXX\Reports.  However, when I run SYWFCU and specify this directory, I receive the following message "There are no custom reports found under the "C:/Sage/Sage 100 Advanced/MAS 90/MAS_XXX/Reports/" directory.

If I go into Invoice Printing and manually enter my custom form code, Sage does access the modified form.

Do I need to do something else to use the comparison utility?

Thanks,

Emily