I am drawing up information @ 1:100 scale & x-ref’ing them into drawings (ie. dimensions, symbols, text… etc)
Now I need to do an enlarged plan @ 1:50, is there a way where I do not need to redo the information @ a different scale resulting in doubling up the work as well as revising it twice if needed?jeff cad2009-07-09 11:58:45

I think that you must redesigne xref drawing for new scale and in your drawing reload xref

thanks for your reply!
that was the answer i didnt want to see....

You could insert your drawing as a block and just rescale it that way.  usually it is better to draw 1:1 this way you can scale with a viewport.
 
I hope this helps.