How do I keep names in a Single Line form in alphabetical order?

How do I keep names in a Single Line form in alphabetical order?

I have created a form called "Add Name" using a "Single Line" box. With this form I have also have a view which can be configured to display in alphabetical order.

I have created forms which have a dropdown box with the  "Field Type" set at Import Data from the Add Name form.

All names where first added in alphabetical order so these are good but when I add an addtional name it goes to the bottom of the dropdown. Is there a way to keep these newly added names in order?

Thanks for any help