SVG export _1_

I know this post is fairly old, but I stumbled across the same problem with group names when converting to SVG. I created a workaround that is included in a script that is called when the SVG is loaded:

Loop through the SVG and find each group and get the name.

var svgdoc = document.embeds(0).getSVGDocument();
var groupList = svgdoc.getElementsByTagName("g");
     for(j = 0; j < groupList.length; j ++) {

       var child = groupList.item(j).getElementsByTagName("g");
       var GroupName = groupList.item(j).getAttribute("id");

Get the length of the group name and determine if the end character of the name is "_".

    var newGroupNameLength = newGroupName.length;
    var childLastChar = newGroupName.substring(newGroupNameLength-1,newGroupNameLength);

If the last character is "_", change the group name to ignore the last three characters.

    if (childLastChar == "_")  {
      newGroupName = newGroupName.substring(0,newGroupNameLength-3);
    }

set the group ID to the new group name.

    groupList.item(j).setAttribute("id",newGroupName);

Hope that helps. I use the same kind of method to correct the beginning of group names where Illustrator replaces illegal SVG starting characters such as '0' and '#' with "_x30_" and "_x23_", respectively.