Access data entry scrolling buttons

I created a form in ACCESS based on previously created table that was empty. Before any cosmetic changes to the form I was able to add records, and using the little < > buttons at the bottom of the form, I was able to scroll through the data in the table. I then made some cosmetic changes, changed the tab order, and now the scrolling buttons don't work. Are they supposed to work on a data entry form, or do I need to add controls for scrolling.