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Legacy Mode Active due to the following parameters while expdp/impdp

Today i got to know about legacy mode in data pump utility during export and import

instead "exclude=statistics" parameter, i mentioned "statistics=none" parameter with expdp.

Syntax:
=======
expdp tables=s1.t1,s1.t2,s3.t3,s4.t4 directory=DATA_PUMP_DIR dumpfile=expdp_tables_28052014.dmp logfile=expdp_tables_28052014.log statistics=none

export log output:
===============
Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
;;; Legacy Mode Active due to the following parameters:
;;; Legacy Mode Parameter: "statistics=none" Location: Command Line, ignored.
;;; Legacy Mode has set reuse_dumpfiles=true parameter.

But the export completed successfully. When i googled about Legacy Mode, i came to know the following facts.

In 11gR2, Oracle decides to introduce Data Pump Legacy Mode in order to provide backward compatibility for scripts and parameter files used for original export/import scripts. The documentation briefly says: “This feature enables users to continue using original Export and Import scripts with Data Pump Export and Import. Development time is reduced as new scripts do not have to be created.”

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