Given a NpgsqlConnection that's already configured, we used to be able to create a new connection from it by calling CloneWith, or casting it to ICloneable then calling Clone.

However it's not possible to do this with LogicalReplicationConnection, since its only way of configuration is passing a connection string, leaving us having to enable Persist Security Info=true.

I would suggest introducing a copy constructor to solve this:

public ReplicationConnection(NpgsqlConnection connection) { /*...*/ }
public LogicalReplicationConnection(NpgsqlConnection connection) { /*...*/ }

Further technical details

Npgsql version: latest (v9)