asian characters handling in 2.0.27 -> 2.3.x upgrade

["ST Wong \(ITSC\)" <ST@itsc.cuhk.edu.hk>]

Hi all,

I've problem when upgrading my openldap 2.0.27 to 2.3.19.    Some
attributes (directoryString) contains encoded data Asian data (e.g.
Big5, GB, Shift-JIS, etc.) which can't be imported to 2.3.19 using
slapadd.  I've to convert them into UTF-8 in order to import these data
into 2.3.19.  I'd like to know if there is any workaround to import
different Asian data without converting to UTF-8, or if there is any
better alternate solution available.

Would anyone please help?
Thanks a lot.
ST Wong (st-wong@cuhk.edu.hk)