Repeating Offline Notifications?

[bvfdadmin]

When I first setup my trial account a few weeks ago, I setup an offline notification for one of my PC's.  This notification would alert me 15 mins after losing contact with the PC, and then every 10 mins thereafter.  Sometime in the past week or so, this behavior has changed: It now sends one alert around 15 mins after contact, with no follow-up alerts.  I can't find any documentation stating that this behavior should have changed, nor can I find any setting to revert back to the repeating alerts.  Has this functionality been removed?