rivets-each-binding-patch.js

var origBind = rivets.binders['each-*'].bind,
    col = { attr: 'data-col', idx: 0 },
    dataKey = 'rivetsEachData';
/**
 * Patch bind method to auto-refresh re-bound data
 *
 * @todo: remove it when this is fixed in Rivets:
 * https://github.com/mikeric/rivets/issues/118
 *
 * @param el
 * @param collection
 * @return {Object}
 */
rivets.binders['each-*'].bind = function(el, collection) {
    var $el = $(el), data = {},
        attrName = ['data', rivets.config.prefix, this.type].join('-').replace('--', '-');

    data[attrName] = $el.attr(attrName);
    $el.data(dataKey, data);

    if ($el.attr(col.attr) === undefined) {
        $el.attr(col.attr, col.idx++);
    }
    return origBind.apply(this, Array.prototype.slice.call(arguments));
};

/**
 * Patch unbind method to clear previously bound data and turn DOM
 * into the original state (with all data- attributes)
 *
 * @todo: remove it when this is fixed in Rivets
 * https://github.com/mikeric/rivets/issues/118
 *
 * @param el
 * @param collection
 */
rivets.binders['each-*'].unbind = function(el, collection) {
    var $el = $(el),
        attr = $el.attr(col.attr);

    $el.attr($el.data(dataKey));

    $('[' + col.attr + ']', this.marker.parentNode)
        .filter(function() {
            return $(this).attr(col.attr) === attr;
        })
        .first().before(el).end().remove();

    $(this.marker).remove();
};

where you place the code, you need patch rivets.js?
Could you send me a complete example and patched rivets.js

You may put it somewhere before you initialize adapters using rivets.configure (say, after you include rivets.js into your page)