Back ground:
On this time, the lot number is mentioned at out of the BOX.
If the lot number was written as same as the other date,
we have no any reason to start re-sorting FG or WIP.
In the record of BIN card, some member write down lot number, some member write down the receiving date, even the lot number was on BOX.
Also the receiving date can be calculated by receiving quantity and kitting quantity.
So I cannot find any meaning of writing incoming date instead of lot number, up to now.
Also such working method is "Duplicate", then lost information as the key point.
For working awareness, the working method is not stable, that's meaning that each operator has not one direction.
Please consider.