I've got my setup from the other form topic:

Product A
  - Color 1
  - Color 2
  - Color 3
  - .... 
Product B
  - Color 1
  - Color 2
  - Color 3
  - .... 
Product C
  - Color 1
  - Color 2
  - Color 3
  - .... 

All these products and colors have their own unique SKU. No we also have Combination Sets which are defined as follows: 

Combination Set 1, containing product A, B and C.
Combination Set 2, containing product A and C.

These combination sets can now be added in the Cart using the new Uniqueness feature. This works fine. 

So in the cart I have OrderLines which contain children OrderLines with the subproducts. 

However when I use HTML (or javascript) AddOrUpdateOrderLine or RemoveOrderLine to update quantity or to remove the orderlines I get errors:

At removing the parent orderline:

The DELETE statement conflicted with the SAME TABLE REFERENCE constraint "FK_TeaCommerce_OrderLine_TeaCommerce_OrderLine"

At updating the quantity the FormPost.aspx just returns with status 200, however the javascript code returns "Cart update failed". 

I tried addOrUpdateOrderLine with the children orderlines, but I get the same problem. Is there something to be added when removing bundled products? 

The single, not bundled, products work perfectly. However whenever I add a bundled product to the cart the delete and update functionality starts to fail.