Yes, Wait list passenger can travel. Same happened with me. My ticket was confrimed and wife's ticket was WL after chart prepared. To be on safer side I purchased General ticket also but was of no issue (as not needed). The chart that TTE had showed my wife's name as WL and he said will not able to get berth as 1A is already packed, so one can travel but berth will not be given. We adjusted on one berth. No issue with partial WL ticket. But cannot get refund as we both travelled.