BBP_PD_SC_UPDATE not updating the line items of Shopping Cart

Hi,

I am trying to update a shopping cart line items for a shopping cart that is already created and saved.

I want to do following two tasks:

1. Update the existing line items.

2. Mark the relevant line items for deletion

3. Add new line item

I am using BBP_PD_SC_UPDATE, BBP_PD_SC_SAVE and BBP_PD_SC_COMMIT function modules in sequence.

The three operations mentioned above are not happening.

In case of updates for line item do I need to pass all relevant details for accounting, partner, longtexts, orgdata along with item details even though there is no change to accounting or org data or long texts for line item?

Thanks,

Ameet