Mass Change Form - No Data Found message

Hi-

We are trying to change the lives of an asset range of assets from STL 5yrs to STL 3yrs.  We want to amortize the adjustment.  For the Asset Book, both the "Allow Amortize Changes" and "Allow Mass Changes" are checked.

When I enter the asset number range in the 'Assets To Change' section of the form, and the old & new Method/Lives in the 'Changes' section......the Preview Report says "No Data Found".  I also have the "Amortize Adjustments" button checked, and am using the defaulted date (current month) for 'Amortize Start Date'

I've validated the asset #s in the range, and confirmed they are active assets.