I cant figure out why google appscript is sending the actual file instead of the copy

So, I recently have been working on a project with google sheets, where I am getting some data and creating files with that data to email as attachment. I am

• copying my template file
• setting a name to that template copy file
• opening it with the new copy id
• doing my replacements of tags (changing values of the copy template file)
• sending it as an email

    function sendEmail(){
        for (var row in rangeData) {
          var varify = false;
          var fileName = new Date().toString();
          Logger.log("template " + templateId);
          var fileId = DriveApp.getFileById(templateId).makeCopy().getId();
          DriveApp.getFileById(fileId).setName(fileName);
          var body = DocumentApp.openById(fileId).getBody();
          Logger.log('current row ' + rangeData[row]);
          for (var column in rangeData[row]) {
            var target = firstRowMapped.indexOf(columnNames[column]);
            if (target != -1) {
              Logger.log('found Key');
              try {
                body.replaceText(firstRowMapped[target].toString(), rangeData[row] 
                [target].toString());
                varify = true;
              } catch (err) {
                Logger.log(err);
              }
            }
          }
          if (varify == true) {
            var toSend = DocumentApp.openById(fileId);
            // send mail
            try {
              MailApp.sendEmail(rangeData[row][emailColumn], 'Test Email', rangeData[row][0], {
                name: 'Emailer Script from DOER',
                cc: rangeData[row][ccColumn],
                attachments: toSend.getAs(MimeType.PDF)
              });
              Logger.log('sent');
            } catch (err) {
              Logger.log(err);
            } 
          }
        }
      }

I am getting my expected files on google drive. The Id of those files match that of toSend yet when I am getting my email, I get the fileId. I have been trying to figure this out for days, no luck. Does anyone know why this might be happening? Any Ideas? I personally have send countless attachments through this process (not with a template though) and never had this problem.

The code in the question is opening two instances of the file, modifying one, then sending the other (unmodified) instance. To fix this, you can either:

Save and close the first instance before opening the other

/* globals
   rangeData, templateId, firstRowMapped,columnNames, emailColumn, ccColumn */

function sendEmail() {

    ...

    var doc = DocumentApp.openById(fileId);
    var body = doc.getBody();

    ...

    doc.saveAndClose();

    if (varify == true) {
      var toSend = DocumentApp.openById(fileId);
      // send mail
      ...

}

Or, only open one instance, and send the same one you modified

// Don't close the doc before this 
var toSend = doc;