Update sequence wrong in Materialized view when using refresh group

Hi,
I made a trigger (for each row) on a materialized view(replication data from a master table in in a different database), which is refreshed by a refresh group (exec dbms_refresh.refresh('"...). However, the update order/sequence is important and must be handled (by the trigger) in the same order how the updates where done in the master table. Unfortunately the updates in the materialized view are NOT in the same order. The trigger is fired in a wrong order.
I am using database version 10.2.0
Does anybody reconize this problem, Is there a solution for this problem ( with keeping the refresh group mechanisme)?
Thanks
Regards
Jurn

rownum is determined as the row is output, so "order by rownum" does literally nothing.
http://docs.oracle.com/cd/B19306_01/server.102/b14200/pseudocolumns009.htm

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