System copy Solution Manager 7.2: Java HTTP connection can't be set

Dear experts,

after copying our Solution Manager 7.2, we can't set the HTTP connection for Java in SOLMAN_SETUP -> Infrastructure -> 2.1. There is a shortdump in this WD component:

Somehow, the ABAP stack tries to set the destination to the old Java stack. We tried several things. The WEBADMIN connection is corrected, as well as the WILY settings in SOAMANAGER. We found an old note, in Solution Manager 7.1 you could change service ConfigAdapter, but in SM72, we can't modify it in NWA.

Any help is appreciated...