Dear Eric, dear Håkon,

the trick was that there must be the same admin, we called it "export" on 
both servers with transitional security, but

you only connect with this admin on the source server and start the export

if you try to connect with "export" on target then the security is changed 
to  strict and we were not able to get this back to transitional


thank you very much, also for the official ibm support

stefan savoric