Used filter for 'No Keywords' and want to add multiple keywords to a file. BUT as soon as I add the first KW the thumb disappears before I can add a second KW presumably because the file no longer satisifies the 'No Keyword' filter.
It's one of the many failings, but there is a workaround I've used. Once you've filtered for "no keywords," select them all and choose to create a new (dumb) collection. It will ask you if you want to put the selected keywords into the collection. Say yes. Now the filter is off and you can add multiple keywords to the contents. Then just delete the collection. I don't even name it so the generic New Collection is a clue if I leave it.