You'll have to show us a VI. I have never seen the tab switch from one page to another unless either the user clicked on a new tab, or the program programmatically changed the tab. Generally for me, the tab control is never read from or written to inside the VI, it is just used as a mechanism to separate and organize different parts of the program. Updating an indicator on a non-shown tab should not be causing that tab to be switched to.
How do you want the user to change the tab order? Do you mean that you want to swap the locations of the tabs so that page 2 moves to the left ahead of page 1?
