The current behaviour is to prevent multi-user data from having its transformation applied. However in some particular cases it is possible to apply them: * If all the users of the multi-user data are part of the selection. * If not all the users are in the selection but the selection is made single-user. The active object is used as reference to set the transformation of the other selected objects. Note: For simplicity sake, this new behaviour is only available if all the selection is using the same data. Differential Revision: https://developer.blender.org/D14377