Sometimes it takes a while for the system to update where your current points stand. It doesn't have anything to do whether you are offline or logged out; your comments were just deleted and the system took time to calculate the point difference into your account. Play it safe with the comments, Visitlegend.
Ur not losing points when ur Offline.. U are only losing points when one of your comments have been deleted. That happens when u spam or troll or something like that