 The deal allowed the senior mortgage to be paid off in full, however, the $300 million "hope note" was written-off entirely.The company planned to invest more than $600 million to overhaul the building with a new lobby, facade and mechanical systems.The purchase attracted controversy since the Qatar Investment Authority (QIA) owned a 9% stake in Brookfield Property Partners, which it had purchased in 2014 for $1.8 billion.