I have two issues with an embed excel file. 1) Th column width changes on display (in an inconsistent manner). Since I have jpg images in several cells this causes a significant issue. I can still see the original format when the sheet is opened for editing in excel. I have used the columnWidth tag in an attempt to force the formating.
{viewxls:name=EquipmentScheduling.xlsx | formatColumn = true | heading = 2}
2) Cells that have time values do not display correctly. For example, 7:00PM displays as 00.54166666671:00 PM