[Koha] Koha 3.12.00.000 and stopwords

Hi I have upgraded to 3.12.00.000 from 3.10.5. However, if I do a search on the OPAC it seems the system is not recognizing key words. Is there anything I should do? It appears the QueryRemoveStopwords under system pref-> Searching has been removed. Any pointers to resolving the challenge? Regards, Admire Mutsikiwa --- Join the Alumni Associaton of the University of Zimbabwe and become a part of this great legacy!!! The Alumni Association of the University of Zimbabwe. Our Past, Our Present, Our Future Together Follow us on Facebook: www.facebook.com/UniversityofZimbabweAlumni Twitter: AlumniUZ Website: www.alumni.uz.ac.zw E-mail: dev.alumnirelations@admin.uz.ac.zw