Updated method HtmlToWmlConverterCore.GetBorderAttributes to eliminate top and bottom borders around the the Header1 and Header2 HTML elements in the workflow template.
diff --git a/OpenXmlPowerTools/HtmlToWmlConverterCore.cs b/OpenXmlPowerTools/HtmlToWmlConverterCore.cs
index 8c35e21..53c370d 100644
--- a/OpenXmlPowerTools/HtmlToWmlConverterCore.cs
+++ b/OpenXmlPowerTools/HtmlToWmlConverterCore.cs
@@ -3379,7 +3379,9 @@
 
             if ((string)val == "none" && (double)space != 0d)
             {
-                val.Value = "single";
+                // Commented out the following line because it created top and bottom borders around
+                // the Header1 and Header2 HTML elements in the workflow template.
+                //val.Value = "single";
                 sz.Value = "0";
                 //color.Value = "FF0000";
             }