It may be just a coincidence, but problematic item history had a negative qty for some day, e.g., stock movement "from the future" was in August, but item received into the stock in September.
I would like to know what BackgroundHALShouldPause does, and how to use it. While it's listed in the HAL Primitives report, it is not used in source code and it doesn't appear in the LMS HAL...