cp command in linux issue

[Patrick Chin]

If I run cp as follows:

# cp -Rup source destination

Why would it prompt me for overwrites since the -u is part of the argument?

       -u, --update
              copy only when the SOURCE file is newer than the destination file 
or when the destination file is missing

I don't really want prompting to occur and just update files that don't exist 
or is newer.  I also tried:

# cp -Rupf source destination

And I was still prompted for yes and no for overwriting.

Mr Patrick Chin P Eng .vcf
Description: Mr Patrick Chin P Eng .vcf