Sorry, I did not see that there was a reply to this question. Thank you for your reply. To answer your questions: - The AC loss issue did not involve a batch run. However I have not yet seen this re-occur. I will notify you if it does. We did not have the situation you described above, with several sub-arrays. - However, the transformer losses are still consistently not saving properly when they are set to 0% (this is just a normal single simulation, no batch work involved). As an example, exiting out of the project and then reopening it will reproduce the problem. The project also shows this problem if it is exported, then opened by another person. Switching between variants has also caused this to show up (e.g., switch to variant 2 then back to variant 1). Please let me know if you are unable to reproduce and I can perhaps send some more details. We use this setting quite often so it would be a big help if the problem can be tracked down. Thank you, Allison