I have a set of jobs and transformations and using file based logging on execution.

When upgrading to PDI 6.0 looks like the logging stops writing on files and also on Spoon log tab. No messages on problems are shown.
I tried to increase the values related do logging on PDI but it does not make any difference:
KETTLE_MAX_JOB_ENTRIES_LOGGED 5000 The maximum number of job entry results kept in memory for logging purposes.
KETTLE_MAX_JOB_TRACKER_SIZE 5000 The maximum number of job trackers kept in memory
KETTLE_MAX_LOGGING_REGISTRY_SIZE 5000 The maximum number of logging registry entries kept in memory for logging purposes.
KETTLE_MAX_LOG_SIZE_IN_LINES 100000 The maximum number of log lines that are kept internally by Kettle. Set to 0 to keep all rows
(default)
KETTLE_MAX_LOG_TIMEOUT_IN_MINUTES 0 The maximum age (in minutes) of a log line while being kept internally by Kettle. Set to 0 to keep all
rows indefinitely (default)

Anyone can have any idea what could be the problem?

Thanks in advance.