The star of the update is a total overhaul of the treasure hunting system itself. Broadsword has rebalanced the way detecting hidden, lockpicking, cartography, mining, and remove trap work in conjunction with treasure hunting, plus rescaled map levels and difficulties, added skill-set based themes to chest loot, added crafting mats and new deco to the drop table, and converted old maps. If you were used to soloing the hardest maps, maybe take a group with you, as these are more meant for multiple people. In fact, if you have done any treasure hunting at all in the last decade, take a peek at the patch notes, as the revamp is extensive.
Content retrieved from: https://massivelyop.com/2019/06/19/ultima-online-has-completely-overhauled-treasure-hunting-in-todays-forgotten-treasures-update/.