DBA Classic
From the Edit Existing Customer screen (AR-A) the Sales Orders button at the bottom brings up old sales orders but not the last ~5 months or so.  
 
Update:  They were there, just jumbled up, the 5 months ago was the time of a DBA update -
 
I need to go to Pervasive and do a rebuild on  BKARHINV Key 0   and  BKARINV  Key 1 per my notes from the time of the upgrade - I didn't do it then because no one noticed.
A belated thank you to Lynn Pantic from 5 months ago.  Also works for the problem in CM-A  
 
Now my question is how to get Pervasive to do the rebuild - I can get to the Pervasive (upgraded in 2014) Utilities menu and I see Rebuild, just not seeing the right files yet.  
 
I think this is the answer:
 
From: http://www.istechsupport.com/faq.php   (copied Aug 14, 2014)
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How can I change the index order of the records in a screen such as the Shipments button in AR-A?
 
When files get out of order by updating or reindexing, we used to be able to use the Pervasive Rebuild and specify the appropriate key and rebuild them in the desired order. However, with the newer releases of Pervasive, it does not work. This is because of certain parameters embedded in the GUI interface for the Rebuild program that you are not able to change. There is, however a command line version of the rebuild that will allow the parameters to be specified.
 
At a command prompt (and the program is located in the PVSW\BIN folder which is in the environment path so you do not need to specify the path to the RBLDCLI.EXE)
 
RBLDCLI -m0 -k0 D:\DBAMFG\DEFAULT\BKARHINV.B
 
The first parameter is always -m0 and the second is -k{Key Number}
 
D:\DBAMFG\DEFAULT\BKARHINV.B is the path and file to be rebuilt. You can use wild cards in the filename to rebuild multiple files.
 
Thanks to Bill at Goldstar Software
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(Of course you need to use the right path to your BKARHINV.B file)