I had a yellow augment crystal of greater false life that I had intended to use for a particular item, but because I didn't have it, yet, I decided to wait and keep the crystal in my bag. After reading that any item obtained after U17 will not accept the old crystals, I decided to use my greater false life crystal in another item I had with a yellow augment slot. But when I went to get the catalyst from Lahar, he doesn't seem to be selling them, anymore. Does this mean my augment crystal is now effectively useless?