hi,
first thing first.
airbus philosophy is that each msn has its own complete FCOM. thus contradiction never exists.
regarding the automatic acceleration at the acceleration altitude, it is effective (it works) only on some msn. at the time of acceleration, if NAV is displayed it should go to CLB, if GA TRK is displayed, it should go to OP CLB.
if there is no automatic acceleration, then one must pull the ALT button to exit the SRS mode (that will stay until ALT *) and engage the OP CLB mode, to be repush to get CLB provided NAV is displayed