Custom Check Field added to Child Table Changing Status

Hello Friends,

I customized the Work Order document to show “has Variants” check Box in Item Child Table. The Work order is one of those created by a Production Plan wherein Nested Variant BOMs are involved.

Things are ok till I check the “Use Multi Level BOM” option. The “Has Variants” checkboxes all go empty…

Two images below show the behavior.

I’ll be very grateful for help with this.

Thanks & Regards
Ratninder S. Bhogal