Aug 18 (Reuters) - OneREIT ONR_u.TO :
* OneREIT obtains interim order for plan of arrangement
* Says obtained interim order from Ontario Superior Court of Justice with relation to deals with Strathallen Acquisitions, among others
* Says interim order authorizes oneREIT to call and hold a special meeting of oneREIT unitholders to consider transaction
* Says in accordance with interim order, meeting will be held on September 25, 2017 with a record date of August 18, 2017