The sale of Orange Austria to Hutchison 3G Holdings Austria GmbH (Hutchison Austria), a subsidiary of Hutchison Whampoa Limited, Hong Kong, has been one of the most challenging transactions in recent years. Parallel to the main transaction, the parties also negotiated the sale of Orange Austria's MVNO subsidiary Yesss! Telekommunikation GmbH (Yesss!), together with base stations, frequencies and…