Attaching databases using backwards compatibility

Hello @signum-net

We are happy to hear everything is working properly now. With regard to performance, there was a large increase in iteration length for PBKDF2 in SQLCipher 4, among other security improvements. You can review all the changes detailed here. Are you wrapping your batch inserts within a transaction? If not, doing so will improve the performance of your insert operations. You may wish to review our general performance guidance here in relation to your application.