Does anybody else experience this issue?
I have "Do Not Disturb" mode switched on at night. I included my daughters contact details to be excluded from this mode to ensure she could call or text me if needed. I've noticed every time I check the do not Disturb settings, my daughters contact has gone, which means nobody can contact me when do not Disturb mode is on. I have to manually add my daughters contact back in every night. Surely it should keep the details you've included?