Blue Iris

I have several cheapy wifi cameras. I am quite aware of, and am used to the issues of using wifi cameras.
It appears that one of the recent updates may have change something which has decreased my confidence in the information i get from BI.
When my cameras is unreachable for what ever reason, BI retains the last image before the camera went rogue. The problem with this is that I never know if there was evan a possiblitiy of an event happening when it was offline. If I play the video, it is continuous without a glitch, or movement, or any indicatation that it was unavailable at a particular time.
Can anyone shed any light or provide a solution/workaround for this?

I received some help by dcsangvzw on the ipcamtalk forum. I have been playing with the Watchdog settings for each camera and that appears to be working as a solution. I'm guessing something has changed in one of the updates that highlighted my problem.