Moving the GPG keys from 1 machine to another

[amit bhalerao]

Hi ,

     We have just completed the migration of the application from 1  
AIX box to another and have changed the encryption from PGP to GPG.
Since there are many external vendors involved the process is bit  
tedious following up with vendor to change keys.
     JUst wanted to confirm in case if we move the application from 1  
AIX box to another :
1.  Do we have to create a new GPG keys on new machine and send it   
to vendor and repeat the tedious process again everytime we move to  
new machine?
2. Is there any way we can migrate GPG keys from old box to new box  
without following up with vendors to change key at their end?
         If anyone has done before please let me know.

Thanks,
Amit