Alphabetized Attendance List

When I enter attendance, the list is in Alphabetical order until about 3/4 of the way through. Girls and Adults who registered this year are tacked on at the end, instead of alphabetized with the rest of the troop. This makes recording attendance take about twice as long as it should. How do I integrate the new people into the rest of the list? Thank you for your help!

This has been an ongoing issue, I am not totally sure but it is possible the Dynamic Meeting Invitations setting may fix this as well.