ZYX-S possible glitch in software.

[dhc8guru]

I have two ZYX systems and love them. I think I may be running into an unexplainable glitch.
Yesterday, I went out to test my 500 after making some mechanical tail adjustments. I checked the head and tail for proper compensation and all was good. Which I do every flight. Started out in a hover, wagged my tail to check for proper stop and holding. All was good. When on the ground I noticed I wasn't getting proper tail pitch throws, I went inside hooked up the ZYX to my computer, loaded the software but did not connect it. I found that all I needed to do was move the the tail servo a little to get the pitch slider back on center and the pitch throws were then correct.
Went back outside, fired it up and as soon as the heli started to break ground, it immediately went full aft elevator and rainbow'd into the into the ground. First thing that comes to mind it the swash compensation is wrong. Sure enough when I tilted the heli aft, the swash tilted aft.
This is the third time this has happened. Once it was the swash roll compensation and the other it was the tail compensation.
I am thinking that something is wiping out some of the settings when I plug in the unit to the computer and connect it to the software. This latest is the first time the swash compensation setting got wiped without connecting it to the software, merely plugging it into the computer.
I am running the latest tarot firmware and 3.0 software. Anyone running having a similar issue?