Combine. Is it possible to revert back effect of IgnoreOutput publisher?

I have a publisher with the following signature.

AnyPublisher<Never, Error>

As I understand it correctly, it is impossible to change its output to something like Void to just catch this output.

Actually, I want to call flatMap on this publisher and change it, but flatMap will never been called because of Never output.

So...

Is it possible to revert ignoreOutput()?