my @configuration_db_one = ...;
my @configuration_db_two = ...;

my $schema_one = MyDBIC::Schema->connect( @configuration_db_one );
my $schema_two = MyDBIC::Schema->connect( @configuration_db_two );
# ^^^ Wrong, connection from $schema_one is reused despite new config.

my $schema_one = MyDBIC::Schema->connect( @configuration_db_one );
$schema_one->storage->disconnect;
my $schema_two = MyDBIC::Schema->connect( @configuration_db_two );
# ^^^ Right, $schema_one will reconnect with its own info when used.