Complex sentence: It had been rumoured that SMRTV would withdraw from the 2009 contest due to poor results in their debut attempt, however, SMRTV rebuked that claim and confirmed its interest in the 2009 contest.
Split into simpler sentences: It had been rumoured that SMRTV would withdraw from the 2009 contest due to poor results in their debut attempy. However, SMRTV rebuked that claim and confirmed its interest in the 2009 contest.