How to delete old slug textframes

You can loop through all page items and decide if it should be deleted.

This script will delete any page Item that extends 10mm or more to the left of the spread. But you can change the test i the function deleteMeTest to be anything that helps you identify the pageObjects that you want to get rid of. my "deleteMeTest" is just one line, but you can make the function as complicated as you want.

Remember to save your document before running this script, because every single item that gets deleted needs a seperate undo if you remove some stuff you wanted to keep.

var myPageItems = app.activeDocument.pageItems;
var myItem; 

var deleteMeTest = function(myPageItem){ // returns true if this item should be deleted 
     // change this function to a good test of whether myPageItem is one of the slug TextFrames you want to get rid of.
     return (myPageItem.geometricBounds[1]<-10)
}

for (var n=myPageItems.length-1;n>=0;n-=1){
     myItem = myPageItems;
     if (deleteMeTest(myItem)){
          myItem.remove();
     }
}