1) replace "log4j.logger" with "introscope.agent.log.level".
2) You do not need to specify "console, logfile". That is taken care of in "agent-logback-configuration.xml" at same location. root is set to INFO by default. (introscope.agent.log.level.root=INFO)
3) Logging level properties for specific child module loggers:
By default modules inherit logging level from parent or root logger. This property allows overriding logging levels for specific modules and their children. Same values are supported as by root logger.
Changing this property does not require restarting the Monitored Process. e.g. introscope.agent.log.level.IntroscopeAgent.Agent=DEBUG
Below should be the new converted properties:
introscope.agent.log.level.IntroscopeAgent=DEBUG
introscope.agent.log.level.IntroscopeAgent.MQMonitor=WARN
introscope.agent.log.level.IntroscopeAgent.WilyTransactionStructure=WARN
introscope.agent.log.level.IntroscopeAgent.ArfTransport=FATAL
introscope.agent.log.level.IntroscopeAgent.CollectorAgent=FATAL