RDD InvWip fields for Inventory WIP Reconciliation

In the rdl for Inventory wip reconciliation report, there are many more fields in dataset Recon, but in RDD, I can only see the following Report Calculated fields.Anyone knows why and please help. Thanks.

I have asked Epicor support about this before.
The system RDD has a lot of stuff behind the scene
To get access to those calculated fields, you need to get the SDK.

Thank you, Toby.