Re: Change specific link path across documents.

try below code

var myDocument = app.activeDocument;

var oldPath = "G:\\Users\\My PC\\Desktop\\";

var newPath = "G:\\Users\\My PC\\Desktop\\New Folder\\";

for (a=0; a < myDocument.links.length; a++) {

    var currentLink = myDocument.links[a];

    var oldFolder = new File(currentLink.filePath);

    var oldImagFolder = oldFolder.parent;

    var linkName = currentLink.name;

    alert (oldImagFolder)

    if (oldImagFolder = oldFolder) {

        var myNewFile = new File(newPath + linkName);

        currentLink.relink(myNewFile);

        };

    };