How do you know that is the lov attached for that?
Because when I check that .fmb, I didn't find any lov attached to that column.
Also that field is not enabled in my system, by default it shows one value.
Make sure your function is enabled and Custom Code isn't turned off?
The other things I notice is when I check your Property setting, I don't think you have the correct field listed for the Target Object
Target Object : ORGS_ITEM_WITH_REV
When I look at the Shipments level, click in the ship to Organization LOV and then >Help>Diagnostics>Examine, it says the field is SHIP_TO_ORGANIZATION_CODE.