WIP Batch - WIP To GR Process

Hello,

I have 3 step production operation and at the end of each operation, I create a WIP batch.  At the end of the 3rd operation, I am trying to link my WIP (at the top most level) to the GR batch to complete production and receive my final product.  However, when I look at the details of my WIP batch in "goods mvoement" tab, there is a 521 movement being performed when it should be 522.  I need the WIP batch to be reduced to 0 and 101 for my GR batch.  

See addition, when I do the final posting, I get the below error.  Does anyone know what this happens?

Internal data tables inconsistent; cancel confirmation

Thanks,

Anurag