Selective updating

I have a problem updating phpGedView 
(http://sourceforge.net/projects/phpgedview/)

The program is very large with several subdirectories.  Many files do not 
change between versions, but even if I use cp -u to update my local copy, 
sitecopy wants to upload the whole thing.  I notice that ncftp seems to make 
up its own mind and upload only what is really new.

Am I using a wrong command locally, or would I be better to use ncftp for 
program upgrades, and retain sitecopy for data upgrades, which affect only 
1/2 dozen files at most?

Doug.
-- 
If computers get too powerful, we can organize them into
a committee.
	-Author Unknown. (well, Isaac Azimov, what about it?)
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