The fullback-threequarter was off his game for large chunks of the Super 15, made it on to the All Blacks standby list to cover injury and is inked in for Saturday's Tri-Nations start on his home patch.
Jane missed out last week because of a serious finger dislocation but looks to be one of four changes being considered for this test with the Springboks.
Others pushing into the starting frame are Daniel Carter at first five-eighths, Sam Whitelock at lock and Jerome Kaino on the blindside flank.
That would mean departure cards for Sitiveni Sivivatu, Colin Slade, Jarrad Hoeata and Liam Messam.
If those plans continue and there are no injuries before the team is announced, impersonally by email tomorrow, there will also be positional shifts for Zac Guildford and captain Richie McCaw.
Guildford is likely to be moved to his preferred left wing where there were such rich pickings at Carisbrook for Sivivatu.
Meanwhile, McCaw is being primed to start in the boot of the scrum for the first time in an All Black test.
Normally that role would be taken up by Kieran Read but he, Brad Thorn, Owen Franks and Keven Mealamu are being given a repeat rest to rejoin their families before they kit up for Bledisloe Cup duties.
At Carisbrook, Messam was used at No 8 but he did not seem particularly prominent or effective.
If he is bypassed this week, it might be that history is repeating as he was ditched in 2009 after playing at No 8 at Carisbrook against France and did not regain his place until the end of year tour.
So McCaw, the peerless flanker for so long with the All Blacks and captain for the last six years, will shift into the boot of the scrum.
That will have twin benefits.
It allows McCaw to notch up some more matchplay after a season blighted by injury and also gives Adam Thomson another hit out as deputy opensider.
Ali Williams gets another run as the fitness and coaching staff do all they can to help him get back to full international noise after his two-year injury hiatus.
Experienced fullback Mils Muliaina and utilities Isaia Toeava and Israel Dagg appear certainties, if fit, for five backfield vacancies for World Cup.
The other two players will be sifted from the performances seen from Hosea Gear, Guildford, Sivivatu, Jane and Ben Smith.
Gear is recovering from a hamstring strain and may be ready next week and he and Guildford are specialist wings while the others can all cover fullback as well.
The squeeze will come after the Bledisloe Cup test when the All Black squad to travel to Port Elizabeth for a test against the 'Boks is trimmed to 26.
Some like Dagg, Toeava, Richard Kahui and Tony Woodcock who are injured but included in the squad may be left behind to get some match practice in the ITM Cup.
