Sharing the 2IS on same DB after Migration from 7.1 to 7.1.2

We have 2 IS sharing the same DB.We have migrated our ISs from 7.1 to 7.1.2. . Architecture setup is same in both 7.1 and 7.1.2.
Schedulers have worked fine,when the IS was 7.1,but after migration to 7.1.2 we are getting issues in schedulers job. The target node has been changed from server:port to server,due this we are getting the error as “Unknown service”.Can any one suggest on this.
Any problem of sharing 2ISs to the same DB in 7.1.2 ?do I need to apply any fix for this.please suggest us.