I'm sorry I don't know much about excell to offer steps, but I suspect it may be that excell is putting quotes around some fields and not others? I think if you can get it to put quotes around all fields that may help. Others can probably instruct better, but if it isn't in the export options, you may be able to change the data type of all fields to text, so that even those that are actually numbers, get wrapped in quotes when you export.