Save link to Sales order in MRP massive work order creation

When we generate a work order from several sales orders in the MRP (in to stock related items), there is not any place where this link is saved. This is, I cannot know the sales orders that generated the work order.

If we generate a work order from a sales order and the item (article) is made to order, the work order possition store the sales order number and line.

It would be usefull to make a table where Beas store this trazeability automatically to be able to extract reports and be able to make some developments, mainly from WO creation in the MRP, but also it should work in SO to WO functionality, in WO summary.