For what it's worth, Cathay Pacific has for some time been advising all passengers using CDG NOT to check their baggage through if at all avoidable. (See
http://www.cathaypacific.com/intl/news/2nd/#EUR )
Baggage handling at CDG has been notorious for years - many reports of bags being opened, things going missing etc.
The general advice seems to be:
1) Avoid CDG
2) If 1) not possible then travel only with hand luggage
3) If 2) not possible then collect bags at CDG and recheck them for your connecting flight.