Picklist dropdown returns unwanted data from another field

Picklist dropdown returns unwanted data from another field

Hello,
I am having a problem with my picklist dropdown.  It is returning the data from the correct field, but also it is giving me data from another field that I am not asking it to.

I have two forms, one for Groups and another for Intergroups.  Each Group is a member of a larger Intergroup.  When someone fills out the Group_Registration form, I want them to be able to simply indicate on a dropdown who their Intergroup is by a reference to the IntergroupName field on the Intergroup_Registration form.

This is fine, except that the dropdown is not only referencing the IntergroupName field on the Intergroup_Registration form, but also the GroupName field on the Group_Registration form.

So I have on the dropdown all the Intergroups as well as all the Groups listed.  Why is it pulling data for Groups when I am clearly specifying the one field I want it to reference?

Here is my code:
  1.  IntergroupSelect
            (
                displayname  =  "Select Your Intergroup"
                type  =  picklist
                private  =  true
                values  =  Intergroup_registration.IntergroupName
                displayformat = [ IntergroupName ]
                sortorder  =  ascending
                width  =  206px
            )