I am trying to move all files in the current directory to the directory GuardDog-CMS. Now all the files are actually identical, but the files in the current directory are more up-to-date. So when I do the move, I also want to make sure it doesn't prompted me with "file already exists" or anything like that. So I try the following:

~/Documents/github/GuardDog-CMS-TEMP/guarddog //current directory

~/Documents/github/GuardDog-CMS               //destination directory

mv -v . ../../GuardDog-CMS

But it gives me this error:

mv: rename . to ../../GuardDog-CMS/.: Invalid argument