Conversion of the highest valid element passing attributes?

Hello,

Question. I am trying to convert a large book. I would like to assign some attritubes to the highest valid element.

My conversion table looks like this:

After the conversion, the root element is red with the attributes assigned. When I change it to the same root element in my element catalog all the attributes disappear.

Is it wrong to want to assign attributes to the highest valid element (root element)?

If it is "legal" to assign attributes is there something wrong with my conversion table?

Thanks for any help!

Margaret