Row Merging In BOM

Anyone know if there is a setting to enable row merging in a BOM so that adding another part just increases the qty if it already exists instead of adding another line item/seq#?

You want the QTY per parent to increment by one when you add a part to the BOM and the part already exists?

That would be a custom if you wanted something like that.

Why not just update the QTY Per on the existing mtl part line?