Change column break or page break characters to carriage returns

Hi

I'm trying to create a script that will copy all text from articles and put it together in one single text box in another document. I need it to take the styles over with it. The problem I'm having is replacing any column break characters with ordinary returns. This sounds like it should be simple but nothing seems to work!

Thank you for any help

Here's my thinking so far

var sourceDoc = app.activeDocument;

function collectText() {
    var articleList = sourceDoc.articles.everyItem().articleMembers.everyItem().itemRef
    var destDoc = app.documents.add();
    destDoc.documentPreferences.facingPages=false;
	//destDoc.layoutWindows[0].screenMode = 1936552048;
    for(var i = 0; i < articleList.length; i++) {
        if (articleList[i].parentStory.characters[-1].contents !== '\r') {
            articleList[i].parentStory.insertionPoints[-1].contents = "\r";
        } else if (articleList[i].characters[-1].contents == SpecialCharacters.FRAME_BREAK) {
            articleList[i].insertionPoints[-1].contents = "\r";
        }
        articleList[i].parentStory.texts.everyItem().select()
        app.activeDocument = sourceDoc
        app.copy()
        app.activeDocument = destDoc
        if (!myTextFrame) {
            var myTextFrame = destDoc.textFrames.add (); 
            myTextFrame.geometricBounds = destDoc.pages[0].bounds;
        }
        myTextFrame.parentStory.insertionPoints[-1].select();
        app.paste();
        while (myTextFrame.overflows) {
            var myPrTextFrame = myTextFrame;
            var myPage = destDoc.pages.add ();
            var myTextFrame=myPage.textFrames.add ();
            myTextFrame.geometricBounds = destDoc.pages[0].bounds;
            myTextFrame.previousTextFrame=myPrTextFrame;
        }
    }
}

collectText();