Unit of measure not shown in the F0911 table or Account ledger inquiry after voucher match P4314

Hi, I'm encountering some issues where in the old system b7334, the UOM would be shown after doing a voucher match in the GL accounts, but after upgrading to E9.1, the UOM field would be displayed as blank while the units would be shown if the branch/plant constants is activated for the write units to journal entries. Would appreciate if someone would assist me here as I've read some documents pointing to a blank UOM setting in the account master, but would like to know whether in the old system it works differently. Thanks