N.J. Stat. Ann. § 43:2-5

Said applicant shall notify the administrative head of the teachers' pension and annuity fund, at the time of his application to such retirement system or pension fund, of his intention to withdraw from the teachers' pension and annuity fund and to enter such retirement system or pension fund and thereupon the administrative head of the teachers' pension and annuity fund shall remit to such retirement system or pension fund the total amount which otherwise would be payable to him upon his withdrawal therefrom.