I am using
aheadworks iphone theme in
Magento 220.127.116.11. But the get a quote or calculate shipping section is not working in first time.
I have invested the issues and found that when I add product to cart its create two entries in
sales_flat_quote_address table and then I calculate the shipping by entering
zipcode in calculating shipping form.
The old entries deleted which was created during add to cart and it create new entries rather than updating the add to cart entities in sales_flat_quote_address.
But in case I calculate shipping second time its updating the entries second time.
I am using the core method
Please help me in case you have any idea regarding this issue.