Correct, young leaves are BIG carbohydrate sinks until they have expanded and begun to produce their own photosynthate. Pruning off new growth allows the plant to redirect carbohydrates into existing organs.
There are a few leaves around the grape cluster that supply sugar to the cluster. The rest of the leaves do not contribute to the growth of the cluster.
There are a few leaves around the grape cluster that supply sugar to the cluster. The rest of the leaves do not contribute to the growth of the cluster.