Magento 1.6 and web service evolution

As Magento try to correct issue when they can't differentiate sku or id on release 1.6 (1.5.1 may be ?), they generate a side effect.

1st : product_tier_price.update, product.update and other web service that need identifier detection doesn't work until magento bug fix. By the time you can modify magento core by your self:
edit : app/code/core/Mage/Catalog/Helper/Product.php
find : public function getProduct($productId, $store, $identifierType = null)
and change :
        if ($identifierType == 'sku') {
            $idBySku = $product->getIdBySku($productId);
            if ($idBySku) {
                $productId = $idBySku;
            }
           if ($loadByIdOnFalse) {
                $identifierType = 'id';
            }
        }
by :
        if ($identifierType == 'sku') {
            $idBySku = $product->getIdBySku($productId);
            if ($idBySku) {
                $productId = $idBySku;
                $identifierType = 'id';
            }
        }

2nd : If your sku is purly numeric as me cause is it's an ena13 these web_services will retrun to you <Fault 100: 'Product not exists.'> any more. But now Magento webservice is able to handle one more optional parameter to specify clearly the type of the identifier (id or sku).

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