I am trying to fix it so that we can use AP-C.   I have played with all the defaults with no success.  
I can not get the expense account to go to the GL. All I get is a debit to 21900-999  POs Red'c not invoiced.   I am sure it has something to do with how I set DBA up in 1997.
 
Below is how it looks if I use AP-C
 
trans date   cus/vnd code     reference      description          GL acct      dept          dept description                         debit amt                 credit amt
 5/22/15          ACEHARD         ch#3675     hammer                22000     000             accounts payable trade              5.00
                                              ch#3675    Ace Hardware        10200     000             Wachovia Bank                                                          5.00
 
5/22/15         ACEHARD          53467          Ace Hardware       22000    000               accounts payable trade                                               5.00    
                                             53467         RNI/Invoiced  219000  999           PO's Rec'd not invoiced     5.00
 
 
But this is how I want it to look or at least how I am use to it looking:
 
trans date   cus/vnd code     reference      description          GL acct      dept          dept description                         debit amt                 credit amt
 5/22/15          ACEHARD         ch#3675     hammer                22000     000             accounts payable trade              5.00
                                              ch#3675    Ace Hardware        10200     000              Wachovia Bank                                                          5.00
 
5/22/15         ACEHARD          53467         hammer                22000    000               accounts payable tade                                               5.00    
                                             53467         hammer               70700     200               tools                                        5.00
 
 
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Laura,
 
Kellogs is right*, but I'll give a little more detail.
 
To figure out what's happening and why, go into IN-A or IN-B and see what Class is assigned to the item. Then go to SM-C and click the Item Class GLs at the bottom of the screen. Now select the Class you found for that item and Edit it. Here, the first line - Inventory Asset/Exp - will show you what GL is being debited when you receive the PO. Note that if you have something in the first column it will override the Default in the right column.
 
You may find that you need to set up some new Item Classes and then update the Item Classes for your Items. Once everything is set up it works great.
 
The other thing Kellogs alluded to is that when entering the PO (if enabled in SD-C) you can manually enter a GL account per PO.
 
 
*except that when a PO is received it is not necessarily to an Expense account. Inventory items should go into an Asset account...

Sounds like you may not be able to.  
 
However, as mentioned, you can specify the GL account by Class, and set the Class of each Item accordingly. A little more work, but that way there is no room for error as long as the items and classes are correctly set up.

I have entered POs in EVO and am able to give each PO line its own Gl Account.  I save the PO with that GL account, but after I pay it and go to GL-O there is no expense.  The amount that should have gone to the respective GL account is going to RNI/Invoiced 21900-999 POs not received.
 
To fix this I am going into GL-P and manually changing the 21900-999 to the correct GL.
 
What am I doing wrong?   How do I get the expense to go GL-O?
 
Thanks
Laura

Thanks Lynn,   I guess I just WANT the activity in GL-O to look like what I have been seeing when we use AP-B.
 
I get an item class  gl error list when I save AD-A in DBA, but when I save it in EVO there is no list of item class errors?
 
Thanks
Laura