Functionality of Material Status Code (F3111.MTST)

Hi,

I'm trying to find some information on the exact functionality of the Material Status Code (F3111.MTST).

Here's my test in 9.0:

P31113 Material Status proc opt = 50.

WO 123 has unissued line with MTST=blank

WO 456 has unissued line with MTST=30

Issue stock on both orders.

WO 123's Partslist now has MTST = 50

WO 456's Partslist now has MTST = 50

Reverse the issues on both lines.

WO 123's Partslist now has MTST = blank

WO 456's Partslist now has MTST = blank

It seems that when there is relief of stock, the Material Status will update to what is set in the proc opt, but when there is a reversal, it blanks it out.