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The former Highlanders coach, who these days is based in Brisbane, has signed on in the job until the end of next year.
Moore has an enviable record with the team since his appointment at the end of 2015, with 15 wins and just one loss from 16 test matches and a 2017 World Cup win.
Moore said despite the team's recent success and impressive record of five World Cup wins, there was no time for complacency.
``It's an important phase for the Black Ferns as other countries are getting better and better. We saw that first-hand in Ireland,'' he said
``We'll have some continuity in the team going into this year but in some cases there'll be some rebuilding going on, too. We need to keep progressing forward and I expect we'll see some new faces this year.
``It's an exciting time for women's rugby.''
Moore said the Black Ferns' impressive work ethic was one of the reasons he enjoyed working with them.
New Zealand Rugby general manager of rugby Neil Sorensen said Moore's re-appointment would be popular among his team and coaching staff.
``Glenn works very, very hard for his team and knows how to get the best from them.
``Everyone who watched the Black Ferns' World Cup Final against England will remember how Glenn helped his team come back from being behind at half-time to deliver the win he knew they were capable of.''