problem with the integration of an instance SQL to envision

Hi I have a problem when I try to configure an intance SQL to my enVision virtual server, this is the scene, I have one SQL server with two instances that i wish configure to envision, one of them was  successfully integrated, but the second instance present something problems, the second instance make the connection corectly but does not break the connetion when the consulting tracefiles ends so this causes that the tracefiles aren´t deleted in the SQL server.

How can I do to enssure that the connection will break and to this form the tracefiles will deleted?

Thank you!!