modify service use srvctl does not take effect

Created a service for preferred instance to connect. It works as expected. After modify the preferred instance, the modifi cation show correctly from srvctl config, but the connection still go to original instance. Please advise how to modify prefer instance for a service.

 

 

srvctl add service -d XLUSG01 -s test1 -r XLUSG01B -a XLUSG01A -e SELECT -m BASIC

srvctl start service -d XLUSG01 -s test1

 

srvctl config service -d XLUSG01 -s test1

Service name: test1

Service is enabled

Server pool: XLUSG01_test1

Cardinality: 1

Disconnect: false

Service role: PRIMARY

Management policy: AUTOMATIC

DTP transaction: false

AQ HA notifications: false