I'm not an electrician, but I think you could just edit the text directly. I also think you can take it back to Autocad, because I think this file is a dwg? Here's hoping you'll find the solution on the site. Good luck, @+. AR.
Maybe it's related to your wire numbering configuration, in the " project " tab, " configuration " icon, "marker " pane , do you have the " unique serial number" option checked?