I need to amend a 2019 1040 that I e-filed using ProSeries Basic.  I want to be able to e-file the 1040X.  The instructions say to backup the client file first.  It says in HomeBase, select the client file(s) you want to backup, then File/Client File Maintenance/(Copy/Backup).  The Copy/Backup box comes up, but a different file than the one I want to backup is not the one that shows in the box, and it will not allow me to change the file.  suggestions?