Selecting new midi outs when loading project doesn't stick.

Hi all.
 
When I load a project onto a system that has different midi and audio outputs to where it was originally created , I get a notification at the start that asks me to firstly choose alternative midi outputs from those available, and then to choose alternative audio outputs from those available. When the project opens the audio outputs have been assigned but all of the midi outputs still say missing and you have to assign them individually.
 
Is there a workaround for this behaviour?
 
I am using Platinum but have noticed this in previous versions as well.
 
Thanks folks:)