importing public key with GNU Privacy Assistant (win 10)

I am trying to import my public key that I generated with Kleopatra and GNU Privacy Assistant.

First I generated my public and private keys. I then export my public key and save it to my desktop (Windows 10). So, let's say my public key is saved as shaun_pub_key I then add the .pgp extension so that my public key is saved on my desktop as shaun_pub_key.pgp. I then want to import the key to GNU PA Key Manager, but even though it reads the file as a public key it does not import it.

When i try to import the public key this is what it says..

1 public key read
0 public keys imported
1 public key unchanged

I have tried importing the key with Kleopatra and GNU Privacy Assistant and both give me the same thing... 1 public key read and 0 imported.

Can anyone tell me what am doing wrong?

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