Deactivating manual (offline) licenses

You currently have BricsCAD activated with a manually activated license.
That is, by downloading the license file from the Bricsys license
manager to the directory where the application is installed.
I see
that I can't deactivate it from BricsCAD. I would have to revoke it from
the Bricsys license manager (or so I think I saw in the program's help)
I
understand that the number of revocations is limited, 2 I think they
are. In that case, there will come a point when I will not be able to
activate the program. What should I do? Buy the license again? I don't
see much logic in this.

I have been asking Bricsys support for
days about these issues but they do not clarify anything. I don't know,
it seems as if this issue is a state secret that affects national
security.