you can copy multiple components all hooked up to each other by highlighting all those components at once. then, right click and hit 'copy'. after that, you can right click and 'paste' that entire routine/group. it will NOT be connected to anything else yet, but it will keep any lines hooked up to each of the other components within that group. and, like CF said, you can also use the 'select subtree'.
one other thing that folks may not know about this is, you can do the selecting of groups of components and copy them into the clipboard and then exit out of that filter and open another and paste that same group in the new filter. as long as you dont do anything else to change what's in the clibboard, you can do this endlessly filter to filter. it's a good way to bring whole snippets into your filters.
you can also hit control-a to select all components within a filter.
If wishes were horses... there'd be a whole lot of horse crap to clean up!
Craig