Expdp with network_link and different character sets for source and target?

DB versions 10.2 and 10.1
Is there any limitation for implementing expdp with network_link but target and source have different character sets?
I tried with many combinations, but only had success when target and source have the same character sets. In other combinations there was invalid character set conversion (loose of some characters in VARCHAR2 and CLOB fields).
I didn't find anything on the internet, forums or Oracle documentation. There was only limitation for transportable tablespace mode export (Database Utilities).
Thanks

Hi DBA-One
This link
http://download-east.oracle.com/docs/cd/B19306_01/server.102/b14215/dp_overview.htm#CEGFCFFI
is from Database Utilities 10g Release 2 (10.2) (I read it many times)
There is only one thing about different character sets.
I quote:
Data Pump supports character set conversion for both direct path and external tables. Most of the restrictions that exist for character set conversions in the original Import utility do not apply to Data Pump. The one case in which character set conversions are not supported under the Data Pump is when using transportable tablespaces.
Parameter VERSION also doesn't play role here, because the behaviour (character set) is the same if I use for target and source only 10.2 or (10.2 and 10.1) respectivly.

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