[Koha] OPAC Search

Hi, Should the following behavior in Koha 3.00.03 be expected normally? I save a record from a Z3950 search but I do not create an item. So I only have this title record. I see in the zebra update log that a new record was exported. Unfortunately, I cannot find the title in the OPAC. Now, I create an item for this title. Again I see in the zebra update log that a record was exported. At this moment I can find the title in the OPAC. Since I can find other title records without item records, I wonder what is going on. What happened at the first zebra update? Any input is welcome! Thanks, Marcel de Rooy