the field you see on the screen is a calculated field  not the field in the record

ICILOC.QTYONHAND

+  ICILOC.QTYRENOCST

+ ICILOC.QTYADNOCST

- ICILOC.QTYSHNOCST

need day end processing?

if you use the formula you will not care if day end is done; but day end will also take care of the qtyonhand