Not a major issue but it is something that is bothering me at the moment.
I have x-reffed my floor plans into my stair detail drawing to ensure that my drawing coordinate. As the plans are of a large building and I'm interested only in one stair I've xclipped the plans down to a sensible size.
I'm now moving the xclips about for presentation and when I start moving them the whole x-ref appears which is making it difficult to accurately place them as I'm getting confused with what line belongs to what (it looses the dimmed effect too!)
This is probably a really simple variable I've forgotten.