windows

[johnf.77896]

Hi, I am trying to edit my window schedule in revit 2012 and I am running into issues. This is a remodeling and I have new and existing windows that I am showing in the same schedule. Here is the issue, when I have the "itemize each instance" selected and the schedule displays all of the windows there are some type of ghost windows that are created. So when I delete these windows it creates another which keeps looping 511 to 512. This also happened to me last week so I deleted 700 or so windows, one at a time, which was not only frustrating but time comsuming. Thought I had it all fixed and now when I am trying to print for bid all of these windows are showing up again. I am using the "Andersen Add In" module so I am not sure if this is the issue or not. anyone else having issues?
thanks