Using paste special to link excel cell range to word doc = adds dotted line border?

Good morning.

I am adding several cell ranges out of an excel spreadsheet into a word document using the paste special option. It works perfect except that the table shown in the word document has a dotted line along the right border of the table. This happens intermittently. Occassionally I can get it to go away only to have it reappear later. Any suggestions for fixing this that anyone has would be great!! I have listed the process that I'm using for linking the excel table to the word document below just in case I'm doing something there to cause the problem.

Thanks!!

-Highlight cell range in excel document and use Ctrl+C to copy the range.
-Go to word document. Paste special -> Paste link ->select Microsoft Excel worksheet object -> Enter.
- Some copy and work fine. Others have the mysterious dotted line at the right of table.

Help!!!