Mass Update for Requisition if lines are created from shopping cart and Requisition lines

Summary

Mass Update for Requisition if lines are created from shopping cart and Requisition lines

Content

I am unable to Mass update the suggested buyer if the requisition lines have come from Requisition line entry and catalog. In case lines only come form either shopping cart or requisition line entry then it works.

How can we enable this functionality.

Regards,

Manish