Strangest thing happened. I had crafted a level 13 repeating heavy xbow - metalline, keen with vampirism. Used it for many levels without an issue. Built the same thing again but with a red augment slot & placed a Ruby of Good in the slot. Used the weapon for the rest of that session, then logged out.
The next day I log in & my newest crafted metalline, keen, vampire + good had been replaced with a standard BtC heavy Xbow of level 0. How is this possible?