Tab ordering not working as it should

Hey All,

I have a form document that I created a few months ago. It was brought to my attention that 3 of the fields wasn't working properly so I went ahead removed them and changed the field types from a drop down menu to a text field. These fields are on the very top of the page so naturally I would want them to be first second and third in the tab order. I go to move them in the tab order menu it doesn't do anything. I tested this out on some of the other pages by moving fields around and it works fine but on this page none of the field's tab order can be moved. Is this user error or a glitch? Any help with this would be greatly appreciated!