You use the ENTER key only, not ALT+ENTER. After using it a few times, it's easy to remember to release the ALT key before pressing the ENTER key, especially now that the ECL is working correctly in v1.4.

If you were having this trouble in an earlier version, when you often had to use the menu to move the cursor to select another checklist because it wasn't recognizing the setting of some of the switches, I would agree.