Someone forgot to enter a UOM on an item record and on the auto-generated invoice record when you edit it and select the UOM (entered after the fact on the item record), it just blanks it out. Does anyone know if this is by design or a bug on the UI?

So usually when the initial form gets rendered it will be what the first data is put in as

You could try to re-enter the item to have the line updated.

@Eric B We recently had this happen (or at least very similar). Once there is a transaction against an item that does not have a sale, purchase, stock UOM, it will error when you try to edit. For us, we got the unexpected netsuite error on save of the item record when we tried to update it. Netsuite said that the only workaround is to inactivate the item. I don't recall if they said this was a defect or not.

Thanks @Roy L for confirming. I ended up having to run a script using the debugger to edit the line to add the units value and it worked.