Add-Ins upload in MS Excel 2010

We are using Infor Lawson 10.0.5.  In the past we were able to successfully use MS Excel 2010 for add-in uploads.  It never used to matter what order the columns were in on the spreadsheet because you defined the fields to use for the upload.  We are now being told that you have to have the columns in the sequential order of the fields to be uploaded.  Apparently now when they are not in the "right" order we get a fatal error on the upload.  Does anyone have any experience with this issue?