GPGrelay does not recognize Gpg-2.1 keys; Gpg4win-3beta...

[gnupgpacker]

Wowh, what a comprehensive answer... :)
THANKS!

> Furthermore, pipes do generally work on Windows. 
> Wouldn't this work?
> gpg2\gpg2.exe --export | gpg14\gpg.exe --import

Similar pipes are working in Windows.
 
> gpg2\gpg2.exe --export-ownertrust >C:\temp\exported.trust
> gpg2\gpg2.exe --output C:\temp\exported.keys --export
> del %APPDATA%\GNU\GnuPG\pubring.gpg
> gpg14\gpg.exe --import C:\temp\exported.keys
> gpg14\gpg.exe --import-ownertrust C:\temp\exported.trust
> gpg14\gpg.exe --check-trustdb

If respecting own pathes and user rights with care, it seems to be a practicable way.
Regular backup recommended.

Thanks once more and regards, Chris