CSSCAN and SYS.SCHEDULER$_JOB

 Hi all,
I'm changing the NLS_CHARACTERSET
from WE8ISO8859P15
to AL32UTF8.

I launch the CSSCAN:
csscan \"sys as sysdba\" full=y tochar=AL32UTF8 log=csscan_log capture=y process=2 array=1024000 EXCLUDE=SYS.SCHEDULER$_JOB

I'm reading these:
Changing the NLS_CHARACTERSET to AL32UTF8 / UTF8 (Unicode) [ID 260192.1]
Solving Convertible or Lossy data in Data Dictionary objects when changing the NLS_CHARACTERSET [ID 258904.1]

According the 258904.1 (query in A2) ), my problem seems to be:
SYS.SCHEDULER$_JOB(NLS_ENV) - VARCHAR2 - CONVERTIBLE

What can I do in order to eliminate this problem?

Thanks!