Shipment with FNSKU B0 with manufacturer barcode setting

Hello,

We are facing a situation where our FNSKU is starting as B0, due to our settings being manufacturer barcode. Because of the FNSKU labels were already printed and put in our individual boxes, I don't have any option to delete listing and create a new listing with X0 FNSKU type which is going to avoid commingle inventory. I am aware of that but due to my current products manufacturer barcodes are covered with B0 FNSKU type barcodes, does it posses any risk of shipment receival in the FBA warehouse ? Can they still use the B0 FNSKU barcode instead of manufacturer barcode?

Thanks.