Hey @mkmulkey the document below helped me a lot. Pages 88-116 would probably be the most useful. Short answer is that there's a hierarchy to costing. If you post an entry at 4 pm that's a higher hierarchy than an entry you posted at 9 am, the system will go back and adjust the 9 am entry for costing changes caused by the 4 pm entry. There's all sorts of quirks and a lot more detail, but that's the simplified gist of it. https://netsuite.custhelp.com/app/answers/detail/a_id/50634/kw/suiteworld%20costing