You must have seen my blog video “How to Import and Post Opening Balances along with Dimensions in NAV2013 using Rapid Start Services” here.
http://mohana-dynamicsnav.blogspot.in/2013/04/how-to-import-and-post-opening-balances.html
You can see the Dimensions in Conf. Package tables fields but you cant see Dimensions as fields in Newly created package.
How to add the Dimensions in newly created package table fields?