I can only give you my own experience, which is fact, that is happening right now to my car due to the ECUtek.

The battery was disconnected to start hubby's car (wouldn't jump start), when battery was put back in, the ECUtek wiped all the change points of my Auto, resulting in having to change very slowly manually, to nurse it. Searched and searched for someone to assist, and finally Allstar Garage says they are pretty sure they can fix it, so it is going in next week, to hopefully be fixed.

True story bro.