This should be so simple, but I just can't figure out what's going on or how to fix it.

I have a very basic report, using no query, with 3 tables being accessed in the main section and one in the detail section. Through the entire report, everything is working great with the correct number of children in the detail section until I get to the last record with an entry on the child table. That single record is then duplicated. I checked the table being used for the detail section and there is just one record that should be produced for the final main/detail group. There is another "group" that follows, but it rightly does not have a child record associated with it.

Any ideas on what is going on with this?