I am seeing some very strange behavior. In the attached workbook, cell B1726 on the Input sheet has formula =B1725. In memory in my C# program, after CalculateFormula is called for the workbook, I can see the DoubleVal…...cell value changes on saving Aspose.Cells Product Family cells-net...investigate. InputCombinedAspose.zip (947.5 KB) Professionalize.Discourse...