The ReFile button should appear next to any return in your list that was successfully filed using NETFILE. If you don't see the return in the list, you can use the "Change a filed return" button to find it. "Open an existing return" will let you open any return.
If the file that you want to change doesn't have the RefIle button next to it, then it either wasn't successfully filed using NETFILE, or it wasn't saved after NETFILE, so the file didn't store the NETFILE confirmation.
