I believe you will have to stop Instance2, as the client reroute "kicks in"
when the normally identified instance is not available.
As it switched to Instance 2, that one became the "normal " one and should
stay so until it (Instance2) dies and reroute will send the client to
Instance1.
From your question, you are not using HADR functions but just testing
reroute so the client has no clue that it should connect to 1 by preference
over 2 if it was rerouted to 2.
HTH, Pierre.

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Pierre Saint-Jacques
SES Consultants Inc.
514-737-4515
> Hi,
>
[quoted text clipped - 6 lines]
>
> Thanks.