Migration from 10g to 12c using data pump

hi there, while I've used data pump at the schema level before, I'm rather new at full database imports.
we are attempting a full database migration from 10.2.0.4 to 12c using the full database data pump method over db link.
the DBA has advised that we avoid moving SYSTEM and SYSAUX objects. but initially when reviewing the documentation it appeared that these objects would not be exported from the target system given TRANSPORTABLE=NEVER. can someone confirm this? the export/import log refers to objects that I believed would not be targeted:
23-FEB-15 19:41:11.684:
Estimated 3718 TABLE_DATA objects in 77 seconds
23-FEB-15 19:41:12.450: Total estimation using BLOCKS method: 52.93 GB
23-FEB-15 19:41:14.058: Processing object type DATABASE_EXPORT/TABLESPACE
23-FEB-15 20:10:33.185: ORA-31684: Object type TABLESPACE:"UNDOTBS1" already exists
23-FEB-15 20:10:33.185: ORA-31684: Object type TABLESPACE:"SYSAUX" already exists
23-FEB-15 20:10:33.185: ORA-31684: Object type TABLESPACE:"TEMP" already exists
23-FEB-15 20:10:33.185: ORA-31684: Object type TABLESPACE:"USERS" already exists
23-FEB-15 20:10:33.200:
Completed 96 TABLESPACE objects in 1759 seconds
23-FEB-15 20:10:33.208: Processing object type DATABASE_EXPORT/PROFILE
23-FEB-15 20:10:33.445:
Completed 7 PROFILE objects in 1 seconds
23-FEB-15 20:10:33.453: Processing object type DATABASE_EXPORT/SYS_USER/USER
23-FEB-15 20:10:33.842:
Completed 1 USER objects in 0 seconds
23-FEB-15 20:10:33.852: Processing object type DATABASE_EXPORT/SCHEMA/USER
23-FEB-15 20:10:52.368: ORA-31684: Object type USER:"OUTLN" already exists
23-FEB-15 20:10:52.368: ORA-31684: Object type USER:"ANONYMOUS" already exists
23-FEB-15 20:10:52.368: ORA-31684: Object type USER:"OLAPSYS" already exists
23-FEB-15 20:10:52.368: ORA-31684: Object type USER:"MDDATA" already exists
23-FEB-15 20:10:52.368: ORA-31684: Object type USER:"SCOTT" already exists
23-FEB-15 20:10:52.368: ORA-31684: Object type USER:"LLTEST" already exists
23-FEB-15 20:10:52.372:
Completed 1140 USER objects in 19 seconds
23-FEB-15 20:10:52.375: Processing object type DATABASE_EXPORT/ROLE
23-FEB-15 20:10:55.255: ORA-31684: Object type ROLE:"SELECT_CATALOG_ROLE" already exists
23-FEB-15 20:10:55.255: ORA-31684: Object type ROLE:"EXECUTE_CATALOG_ROLE" already exists
23-FEB-15 20:10:55.255: ORA-31684: Object type ROLE:"DELETE_CATALOG_ROLE" already exists
23-FEB-15 20:10:55.256: ORA-31684: Object type ROLE:"RECOVERY_CATALOG_OWNER" already exists
any insight most appreciated.

Schema's SYS,CTXSYS, MDSYS and ORDSYS are Not Exported using exp/expdp
Doc ID: Note:228482.1
I suppose he already installed a software 12c and created a database itseems - So when you imported you might have this "already exists"
Whenever the database is created and software installed by default system,sys,sysaux will be created.

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