Color Swap Between Libraries: Is this Possible?

Question

I work with a large number of Illustrator files daily that all use the Pantone Solid Coated library for their swatch color scheme. This color library will be used whether customers provide the art pieces or if I design the pieces for them.
However, I have found that in order to best match our digital press we must to convert the inks to the Pantone Color Bridge CMYK PC library before printing. 
Basically the same color number just the different library (eg  PMS 200C would convert to PMS 200PC if outputing in-house to the digital press).
My question - is it possible to create a script that would swap out all the colors in a document (that are in a specific library) with the same colors from a different library?
*More specifically what I am wanting to do is if I have a document that has a dozen solid coated colors swap them for their same numerical equivelant in the Color Bridge CMYK PC library.
- Thanks

Answer 1

Depending on how much work you're trying to save, this script might help. The difficulty lies in that you have to break down the new Pantone into CMYK values to be able to script the color change. I created this script to swap out a Pantone swatch in over 100 files for me. So it's probably not worth the effort for just a few files, but for a larger batch it could be helpful:
var myOriginalColor = "PANTONE 1395 U"; //The name of the swatch you want to change
var myNewColor = "PANTONE 620 U"; //The name of the color you are swapping in
var myNewColorDetails = new CMYKColor(); //CMYK values for the new color
myNewColorDetails.cyan = 44.5960164070129;
myNewColorDetails.magenta = 40.0823950767517;
myNewColorDetails.yellow = 81.8265020847321;
myNewColorDetails.black = 14.1054391860962;
var myDocument = app.activeDocument;
var myNumberSwatches = myDocument.swatches.length;
    for (var j=0; j<myNumberSwatches; j++) //Checks to see if my new color already exists as a swatch and deletes it if it does exist
            var mySwatchIndex = myDocument.swatches[j];
               if (mySwatchIndex.name == myNewColor)
                    var myCheckSwatch = myDocument.swatches.getByName(myNewColor);
                    myCheckSwatch.remove();
                    j = myNumberSwatches;
    var mySwatch = myDocument.swatches.getByName(myOriginalColor); //Grabs the swatch that is being replaced
    mySwatch.color.spot.color = myNewColorDetails; //changes the swatch to the new color
    mySwatch.name = myNewColor; //renames the swatch to match its color