Complex sentence: In 2014 APA sold its 33.4% stake in Envestra to Cheung Kong Infrastructure Holdings, while retaining the operation and management of Envestra's assets until 2027.
Split into simpler sentences: In 2014 APA announced the sale of its 33.4% interest in Envestra to the Cheung Kong Infrastructure group. APA still retains the operation and management of Envestra's assets until 2027.