The “Quick Rank” search does not try to find combinations of gear that remove your other crafted items to combine with the crafted item being ranked. We do have adjustments to deal with breaking/making set bonuses in the “Quick Rank” that we can extend to deal with the embellishment unique constraint – it’s on my short list of things to revisit.
In the meantime you can use the “Add to my Bag” search to try a particular crafted item – in that case it will try potentially thousands of combinations from your inventory with each item in the list. I know that’s a bit less convenient, but it should get the job done until we update it.
Over the next few months we are also going to explore some bigger changes to the Upgrade Finder to make it more convenient in general. We have some ideas that may or may not work out… so we will probably do a beta of it and let people switch between the old/new version at will and give feedback.