I have a list of specifications on a drawing that has half of the text properties link to custom properties in the design table. When I explode this block, edit it and try to turn it into another block all of the text strings are automatically assigned the same attribute, and so each text string says the same thing. How do I keep this from happening?

How do I view the Auto Attribute properties of text before I turn it into a block to remove any unwanted links to other properties?