Differences in the 11.5.8 and 12.0.6 versions of the Transactions Available for Reconciliation Repor

There appears to be differences in the way the 11.5.8 and 12.0.6 versions are calculated.  This is what I gathered from my analysis:

12.0.6

Total Available Receipts

- Total Reversed Receipts

- Total Available Payments

+Total Voided Payments

Net Available Amount

11.5.8

Net Journal Entry Lines

- Total Available Payments

+Total Voided Payments

+Total Unreconciled Statement Lines

Net Available Amount

Is the above analysis true?  If so, please explain the changes.  What is Net Journal Entry Lines compared to Total Available Receipts?  What makes up the Total Unreconciled Statement Lines (Stmt-Payment)?  Is there anything I'm missing in the calculations?  Any help you can provide is greatly appreciated as the client just upgraded to 12.0.6 from 11.5.8.  Thanks!