Posted 17 May 2022, 6:31 pm ESTHi,
We found that the macro of some .xlsm Excel workbook disappeared after saving using the latest library (V5.1.1). Please refer attachment for reproduction.
If We change the test project to .NET Framework 4.8 there is no such problem. It seems that it happens with .NET 6 only.
Please help to investigate this issue. Thank you.