[opensuse] How to avoid using menu sections with YaST Bootloader

When I use YaST to set up my boot loader, I noted that is uses the menu section to define how to boot up previous versions of openSuSE. This is resulting in a chain of menus, each leading to the menu list for the previous version of SuSE, which is a PITA when trying to boot up an old version of openSuSE... Is there any way to tell YaST not to use menu sections when it proposes a merge with other existing GRUB bootloaders? Marc...