We have found a defect in Supercapitals. Now, they only work for a limited amount of time before self-destructing.
Basically, if you undock and use any module or commit or come under any type of aggression, a counter starts counting down. When that counter reaches 0, the super self destructs.
The counter timer is permanent, meaning that if you spend 30 seconds, then it minuses 30 seconds and does not add it back, ever. There is nothing you can do to add back time on the counter.
Simply undocking and floating around and doing nothing, will not decrease the counter. But activate a single module, and the counter will start to decrease.
Also, if the counter has decreased by even a single second, you cannot repackage to sell on the market, though you can still contract it, and you cannot dissassemble for minerals. Only trash it.
Might be a good idea to extend this to rorquals too, but not sure yet.