Unable to add user to a new organization

[Nicholas Beltz]

How can I reactivate user accounts that were part of a defunct  organization? I’ve created a new organization to enable users to access Jira, but when I try to invite them, I’m notified that their accounts are deactivated. Since I no longer have access to the old organization, I’m unable to manage or reactivate these accounts. How can I resolve this issue and successfully add these users to my new organization?