I don't have a solution, but I can verify the same thing happens with my add-in file I created. If I recall correctly, the save button worked as long as it was a macro-enabled workbook (xlsm). However, when I converted it to an add-in (xlam) I started losing my changes when I used the save button. I too began using the thisworkbook.save method after searching some forums for a solution. I didn't realize it was SmartView related.