Option + Backspace: deleting outline

I’m not getting the deleting outline option (that deleting the selected outline & keep the path open) in Glyphs 4 ( Option + Backspace ), this option was there in G3

now both ( Option + Backspace ) + (Backspace) gives the same option of deleting.

The Option key now changes the action to apply in all master layers. Shift-Delete does in Glyphs 4 what Option-Delete did in Glyphs 3. For details, see:

Perfect, thank you..