Build 5.0.0.2 of xlsgen adds support for preserving custom sheet views. This was already supported in XLS files, but is now for XLSX and XLSB files.

Custom sheet views are views that have their own zoom level, hidden rows, frozen panes and so on. Custom sheet views can be created in Excel by going to the View menu and clicking on New Window to create a new custom sheet view. All other views are open simultaneously. And to switch which view goes in the foreground, click on Switch windows.