I have created a submenu and it has a list of 6 buttons one after the other, then a previous button. I have made sure that the first button was Number 1, second button number 2 etc. However when i preview the menu and I use the control to go from button 1 to the next, it doesn
Button routing has nothing to do with button number.
It sounds like you need to manually route your buttons. Uncheck "Automatically Route Buttons" in Menu properties, then drag and drop each button routing arrow to the button you want it to take your viewer.