Today I was inputting some new products for one of our vendors.  For this vendor I create all the SKUs we use to barcode the product, they are not provided.  So for example when I inputed AU040 it accepted it and I then went to print barcodes where I realized I had already used that SKU (I wish there was a columb when viewing all products in a category that listed the SKUs). Normally when I would enter a duplicate SKU square would  notify me and not allow me to save the product until the SKU was changed, however after doing a test with using other duplicate SKUs it still did not notify me.  Is this a new change? Has anyone else noticed this?