Hidden relationships

[James]

I'm using Corporate trial version, release 577.

We have build a number of system views on Component diagrams (dragging & dropping h/w and s/w items from Deployment packages)

To reduce clutter on the diagrams I use the diagram level "set visible relations" feature to turn off a number of the relationships.  However, whenever I then drag another Node onto the diagram the last lot of 'hiding' of relationships that I did reverts and they show again.  Only by pressing 'save' after each lot of hiding can I prevent this happening.  

Is this intentional?  If it is, then this might be a useful tip to others....