Hi atkashinc ,
Thanks for your post.
I'm sorry, but I don't get you.
What isn't updated in the WooCommerce products list? Which list isn't updated?
FYI, I've just tried to search for a product by SKU in a PO, and it worked.

Which field do you talk about when you say Barcodes? The ATUM barcode field? The "GTIN, UPC, EAN, or ISBN" field? Anyway, neither of these two fields can be used to search for products in POs.
Best Regards,
José Andrés