Revoking USB license

How do I revoke export license? I mean, I use 1 export license for an USB-stick, then I would like to uninstall DO from the first stick and install on another (or reinstall on the same stick).

I will be testing a localized version of DO, so surely I will try the export process a few times and I wouldn't like to "expire" the license.

X.

Just delete Opus from the old stick and export it to the new one. No need to do anything special.

For reinstalling on the same stick you can export over the top of a previous install. No need to delete it first.