Can't find any mention of this on forum so I must be missing something very basic.
 
As long as I can remember, the totals showing on the SO-A screen are inconsistent.  Why doesn't the total showing on the individual Sales Order match the total on the SO-A screen?  
 
I've seen this through several updates. We have some products that have F & O and others that don't, but I can't find anything that points to either. Many times there is only $0.00 total in SO-A and sometimes just part of the items on the invoice show in the total.
 
This happens on both open and closed sales orders.
 
Can anyone give me more ideas on what might be going on?  I'd like to get to the bottom of this.  Any ideas are appreciated.  

It was recently changed (fixed) to always include the total balance of the order whether on back order or not.  Closed SO should always be 0.  I think the fix was since the 10/31 update so it will be in the next one.
 
There is also a utility to recalculate the totals to the total open order balance.