You have to jump on UOM issues quick. There are a few things you can do, like uncheck the has been used checkbox, but they have to be done before receiving the new part in on a PO.
The UOM conversion is not very likely to fix any real mistakes.
The only time we’ve found the UOM conversion useful is if immediately after a part has been entered and saved with wrong UOM (i.e., this most typically occurs upon duplication of part with different UOM), then we can run the UOM conversion, prior to any part transactions against it. Once there’s part trans, you’re (and we frequently!) are stuck
Nancy
I could see not allowing change of UOM Class after transactions, but not being able to change the IUM (while staying within the same class) is down right awful.