Hi,
Thanks for providing us template files and details.
After an initial test, I observed the issue as you mentioned by opening and re-saving your template XLSB file, the PivotTable connections removed for the slicer shape when re-saving the XLSB file format as you pointed out.
e.g
Sample code:
string filePath = @“e:\test2\Financial_Statement_Input_Report_Withdata_original.xlsb”;
Workbook workbook = new Workbook(filePath);
workbook.Save(filePath + “.out1.xlsb”);
I have logged an issue with an id “CELLSNET-43248” for your issue. We will look into your issue to figure it out soon.
Once we have any update on it, we will let you know here.
Thank you.