Complex sentence: While the new deal gave studios the sliding residual scale they sought for hour-long reruns, writers won a modest financial gain when hour-long shows are sold internationally; the writers also gained creative rights regarding original screenplays and TV movies.
Split into simpler sentences: While the new deal gave studios the sliding residual scale they sought for hour-long reruns, writers won a modest financial gain when hour-long shows were sold internationally. The writers also gained creative rights regarding original screenplays and TV movies.