IFCB Intensity issue

I'm running a Road Hog with latest build 3.1.7 and I'm running into a strange playback issue.
I have one master with a cue stack of positions and tracked intensity (100%) from cue 1 onward. I have another master with just 2 of the fixtures in a different position and color with intensity recorded @ 100%, and the fader set to IFCB.
When I have a cue active in master 1, bring the fader to zero, fade up master 2, everything fades in fine.
The problem happens when I fade master 2 down, as soon as I get below 95% or so, the lights snap to zero intensity while all the other parameters fade back to original values in master 1 all the way to the bottom of the fader travel.


Any insight into this? This problem seems similar to the HTP effects issue.
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