Hi Serkan,
It's really a strange behavior before going to answer your question, Can you please help me to know the following things.
1. Compare the collection of the particular object(Source of List Selection field) in the ATE for both the transmits (First and Second time).
2.Make sure the unique key of the collection is bound properly with the key of the List Selection UI element.
3.Make sure the include rule does not play a role for this.
Best Regards,
Sudhir.