title: Catalog price rule vs Shopping cart rule
body: <p>I haven't found an answer anywhere so maybe some of you can came up with an explanation.</p>
  
  <p>Here is the problem:
  I have a catalog price rule. Discount of 10% on a category which applies on customer groups with 5% and 10% discount and of course normal customers.</p>
  
  <p>Now, the problem is that when a customer that belong to a discount group buy a product from discounted category, the product already discounted have the discount group also. (5 or 10%).</p>
  
  <p>Is there a way in telling magento to disable shopping cart rule if there is a discounted product in the cart?</p>
  
  <p>I'm sorry I don't have a question related to some magento code but this is a big problem and any help is more than welcome.</p>
  
  <p>Thanks.</p>