What version is this? Are you getting any errors when you try to export? When you export batch jobs, if it has depending batch jobs, you need to export them as well. Try the granular commands of export/import if you are using BL 8.1 and above. These blcli commands are made for a better functioning of export/import. Also if you see any error, attach appserver.log.
I am using 8.0.
The customer I am doing work for is on 8.0 so we can't switch, at least not yet.
I am not seeing any errors in the appserver.log.