We are currently using ICS (iCalendar) to upload attendees into Concur.  This has been working great and is easy for employees to use.

However, we recently learned that this functionality is going away soon.  I am looking to see what other companies are using instead.

The template upload is not an option for us, since it doesn't work with employees.

Is there another solution that allows you upload attendee lists (including employees) into Concur?