(14)Since a merger or division of the master UCITS may become effective within 60 days, the time limit for the feeder UCITS to apply for and obtain approval of its new investment intentions and to grant the unit-holders of the feeder UCITS the right to request repurchase or redemption within 30 days, may in exceptional circumstances be too short to allow the feeder UCITS to know for sure how many of its unit-holders will request redemption. Under such circumstances the feeder UCITS should in principle be obliged to request redemption of all its units in the master UCITS. In order to avoid unnecessary transaction costs, the feeder UCITS should however be able to use other means to ensure that its unit-holders may make use of the right to request redemption, while allowing it to reduce transaction costs or to avoid other negative impacts. The feeder UCITS should in particular apply for approval as soon as possible. Furthermore, the feeder UCITS should for instance not be obliged to request redemption to the extent its own unit-holders choose not to make use of that facility. Where the feeder UCITS requests redemption from the master UCITS, it should consider whether a redemption in kind might reduce transaction costs and avoid other negative impacts.