Hi Abdullah,
I followed your advice and did a check if the object was writen to my transport. The object was missing on the transport. But also searching in transport connection did not help.
So I had a look into the table TADIR and also here I could not find the mentioned object which was realy strange to me, as the process chain was active and correct.
I than deleted the event collector(AND) object in the process chain and created a new one. A check in the table TADIR now showed the before invisible EVEN_BEY5RHD67LRF9UT6G9LXEZUK6 and also the new one created. The new EVEN Object(and also the old deleted one) was written to the transport. Importing it into Quality System worked without any problems.
I´m not 100% sure about this behaviour but maybe its linked to the fact that the process chain was a result from the Dataflow migration wizzard. Maybe while migrating that dataflow something went wrong.
Anyway, thanks to all of you for your help!
Best regards
Christian