Yes, Air France inherited two PW4060-powered 767-3Q8ERs from UTA and one 767-37EER from Aéromaritime (their charter subsidiary).
IIRC, Air France ordered their first CF6-80-powered 767-300ERs in April 1992, when they cancelled an order for four 747-400Fs in favor of three 767-300ERs.
In May 1995, that was converted to seven 767-300ERs (in addition to further Boeings). Eventually, all the orders Air France had for the 767s (and some 737-500s) were cancelled in favor of 10+10 777-200ERs in November 1996.
Actually, the A310s and the 767-300ERs were aimed at different missions: Africa/Middle-East for the for former (ABJ, DKR, NDJ, OUA, DXD, JED, ...) and thin long-haul routes for the latter (DEL, CCS, THR, ... and later PHL, BOS, IAH, ATL, CVG, ...).
The economics of the A310-300 vs. 767-300ER would be an interesting debate though.