I appear to have found a bug with the MergeNamedStyles function added recently. Please run the following top-level code (adjusting the file paths as needed) with the attached zipped workbooks as a .NET 9 C# console app
…...bug with MergeNamedStyles Aspose.Cells Product Family bytefyre...Dev.zip (790.5 KB) : using Aspose.Cells; Workbook targetWbk = n...