Twice, I have built new stonework addons from the expansion...double checked that they were locked down...and the next day 95% of the work was gone....hundreds of mined granite boulders, (hours of time wasted....two days in a row....I have enough "snap" to know to double and triple check the items I lock down...I now realize, I should not make any changes/addons to my keep until the devs get this worked out....