After migrating a nJAMS on a large BusinessWorks environment, you need to check, whether all engines are actually using the updated version of the client. To check this, you can either check every engine log file or you can just go directly to the database.

SELECT o.DOMAIN_NAME domain,
  o.OBJECTNAME engine,
  o.CLIENT_VERSION,
  o.LAST_UPDATE
FROM njams_t_domain_objects o
WHERE o.type=3

result:

domain engine client_version last_update
fs_dev C1_Services-C1_Services-1 3.0.1 (Build: 13649) 15-09-08 06:03:44,687950000 -07:00
SAP 00 IDOC_INBOUND 3.1.0 15-09-23 02:54:22,094548000 -07:00
fs_dev ESB_Engine-ESB_Services-1 3.0.0.1 (Build: 9018) 15-09-08 06:02:15,381295000 -07:00
fs_dev C2_Services-C2_Services 3.0.1 (Build: 13649) 15-09-08 06:02:16,678376000 -07:00
fs_dev DWH_Services-DWH_Services 2.1.2 (Build: 4414) 15-09-08 06:02:45,705832000 -07:00
fs_dev SAP_Services-SAP_Services 2.1.2 (Build: 4414) 15-09-08 06:02:45,711837000 -07:00
fs_dev tracktest-tracktest 3.0.0.1 (Build: 9018) 15-09-08 06:10:16,776542000 -07:00
SAP 00 IDOC_OUTBOUND 3.1.0 15-09-23 02:54:21,928280000 -07:00

   

all the stuff shown here works with version 3.1, no clue about other versions of the software