Remove Characters from Filename during File Export

Hi all,

I have been working with Silly-V​ who has been immensely helpful in creating a script to automate file creation through Illustrator.

What I need some help with now is the ability to add into this script the ability to remove "x #" of characters from a filename during export. This would be ideal as it will totally automate what I have been doing by hand for months.

The current script we have put together takes what generally would take me ~1 minute per file, and has reduced it to 10 seconds. Translate that across the need to process roughly 800-1,000 files, and you can see where the time invested is decreased significantly.

The final piece of the puzzle is the removal of characters from only a ONE of the two files that are created via this script.

First, here is the current script. It seems to be working flawlessly for what I'm asking it to do.

#target illustrator-19  
function test(){  
  
  
  var folder_1 = Folder("~/Desktop/Header CAD");  
  var folder_2 = Folder("~/Desktop/Clean CAD");  
    
  app.userInteractionLevel = UserInteractionLevel.DONTDISPLAYALERTS;  
    
  function revealAllLayers(doc) {    
      for (var i = doc.layers.length - 1; i >= 0; i--) {    
          doc.layers.visible = true;    
      }    
  };    
  
  
  
  
  function hideLayer(doc, name) {    
      doc.layers.getByName(name).visible = false;    
  };    
  
  
  
  
  function exportMyPng(dest, doc, props) {    
      if(props.hasOwnProperty("antiAliasing")){    
        switch(props.antiAliasing){    
          case "ARTOPTIMIZED" : {    
              app.preferences.setIntegerPreference("plugin/PNGFileFormat/AntiAlias", 1);    
              break;      
          }    
          default : {    
              break;    
          }    
        }    
      }    
      var pngOpts = new ImageCaptureOptions();   
      pngOpts.antiAliasing = true;   
      for (var all in props) {    
          if (pngOpts.hasOwnProperty(all) && all != "antiAliasing") {    
              pngOpts[all] = props[all];    
          }    
      }    
      doc.imageCapture(File(dest + "/" + doc.name.replace(/\.\w+$/, props.extraStuff + ".png")), doc.visibleBounds, pngOpts);    
  };    
  
  
  
  
  var doc = app.activeDocument;    
  revealAllLayers(doc);    
  hideLayer(doc, "Materials");    
  hideLayer(doc, "Detail Artwork");    
  exportMyPng(folder_1, doc, {    
      transparency: false,    
      antiAliasing: "ARTOPTIMIZED",    
      resolution: 300,    
      extraStuff: "_header"
  });    
  
  
    
  hideLayer(doc, "Header");    
  exportMyPng(folder_2, doc, {    
      transparency: false,    
      antiAliasing: "ARTOPTIMIZED",    
      resolution: 300,    
      extraStuff: ""
  });    
  
  
  app.activeDocument.close(SaveOptions.DONOTSAVECHANGES);  
  
  
};       
test(); 
test(); 

I have found that the program Name Mangler​ does an exceptional job of accomplishing the renaming task. Here is a screenshot of what I'm asking for looks like with that program.

My ultimate goal is to be able to build that single functionality of Name Mangler into the existing script I posted above. Now, the catch is that I ONLY need it to affect the file created by the section of Lines 66-71. As you can see, I need it to remove 14 characters from the filename starting at the index.

Is this possible, and something anyone can help with?

Thank you in advance!

Brooks