I'm making a booklet identifying all 200 products for a client. I had been attempting to import 3-7 pdfs using the place function at a time. Show Import Options is on. Often one or two files will appear in the links list as if they were coming in with the others, but do not come up in the placing. They are in the links panel with no page number and no pasteboard indication. If I go back and place an item that has done this individually it will work. If I wasn't checking in each place that the "image file name" number matches the large part number on the top of each page I would have accidentally omitted several items from the catalog.