There's also a CLEAR alternative for most of the items in the LOAD page. Instead of the normal DO IT, press the CLEAR button to clear all memory before the selected item is loaded.
You probably need to create a Multi and maybe a default Program after you've cleared the memory. Make sure that 'Default items' in GLOBAL is switched ON. You may still have to create that Multi though, even when switched on. Afaik, that's going to be fixed.