GoKawiilmacOS Tahoe blocks moving login keychains between Secure Enclave Macs
A developer found that copying the login.keychain-db file from one Mac to another no longer works on macOS Tahoe when the destination Mac has a Secure Enclave chip. Previously, users could transfer this SQLite-based keychain file and unlock it on a new machine simply by entering the correct password, but that method now fails.