Hi,
In Aspose.Cells for .NET 26.4.0, Workbook.Save(path, new XlsbSaveOptions()) writes a 6-byte stub for xl/calcChain.bin regardless of how many formula cells the workbook contains. The same workbook saved as XLSX via n…...vs directory metadata, .csproj, Program.cs, and...calc-then-save with no other edits, so this is the key case. Cell-level...