Unfortunately these type of systems use shadow copying and coordination systems that don’t work very well with Keynote Managers proprietary multi-user access system. It seems that the number of writes that KM needs to do to these files to allow multi-user interaction can ‘confuse’ these systems and the copies between servers don’t make it bac and forth in time and data is lost. If possible we would recommend turning off acceleration for any keynote text files on this system that multiple users need to access or looking into our Cloud Services product.