Build 4.0.0.74 of xlsgen improves the compatibility with XLSB files when it comes to preserving the following objects :
- slicers, table slicers, OLAP slicers
- timelines, OLAP timelines
- conditional formattings (O14 and O15)
- range protection
- sparklines
- web extensions
- data validations (O14)
- pivot table references and decoupled
- workbook properties (O14 and O15)
- data model (power pivot)

O14 = Excel 2010
O15 = Excel 2013