Migrated users in a new MS Tenant have old calendar invites from previous tenant users

Good afternoon. We recently moved a group of users to a new Microsoft tenant. Before the migration, some users had sent out meeting invitations while using the old tenant. Now that they’ve transitioned to the new tenant, they were able to remove those meetings from their Outlook client. However, the attendees who received those invitations still see the meetings in their calendars

I have tried to use the command "Remove-CalendarEvents" but because the original account was used to create the invites under the old tenant, the command cannot find that email address in the new tenant.

Any help would be greatly appreciated.