Yes, shareholders still retain their exact share holdings as a number entry in their Brokerage accounts, just not entered as a ticker. Should KADR re-register the number entry in your Brokerage account would change back to a ticker entry, but the shares would still show zero value until FINRA approves a Form 211 for the stock to obtain a Market Maker sponsor to begin trading the stock.
Just on memory the one revoked stock that did get re-registered and obtained a Market Maker sponsor took about two years. It is a very long, tedious process where the SEC vets every syllable and every entry in any FORM 10 re-registration application.
To bite the worm of incite is to bite the HOOK of the antagonist . They win .