I've an existing extracted dxe file based on linked data into a table between Excel file and some block attributes. Then I try to use this dxe file as a template for creating a new data link extraction table in another dwg file. The selected blocks for extraction and the Excel files are the same. When I reach the point of matching the index keys in "Link External Data...", the "Drawing data column" is missing only my index key in its list. The rest of the attribute names are there. This way I can't make the connection with the same key from the Excel file. Everything works fine if I start from scratch without using the existing dxe file as a template. If this is a normal behavior what's the point of using these dxe files as templates?