When updating product quantities on the new product page layout the "tab" jumping between fields is much less convenient than the old page layout. If I was in the adjustment column on the old page, entered a number, and hit "tab" it would take me to the adjustment column on the next line. Now it takes me to the updated qty, then the save button for the line, then to the adjustment column on the next line. The old format was much more useful.

Second item: when updating product inventory the "save" button at the top now closes the entire update process. It used to just save the items on the screen, but keep you in the update window. This was helpful to "batch" update inventory. Update like 5 items, save, clear the search window, and then scan 5 more items. Now you have to save each individually, which is much more clicking.

saving each row as you tab through them isn't an option as saving a row refreshes the page and loses your cursor focus.