Wall headers for openings are not shown in the Sapphire Structure layout material list.

For the listing opening headers in a layout material list, BC Framer® and Sapphire Structure are slightly different.

In BC Framer®, header inclusion is simple.  You can turn on the Header here: Job Properties > Job Settings > Output > Layout Material List > Include > Wall Framing (set to varies) and turn on Headers.

In Sapphire Structure you will have to turn "Headers" and "Panelized" under Wall Framing on before you will see the headers in a Wall Framing list. Or turn on Wall openings to see the header in the Opening list. The screen shot below is from Sapphire Structure.