The mutation is for rdgA1 (http://flybase.org/reports/FBal0014457). While the previous localization said it was C9021748T we found out that the mutation was really G9019990A, or G3677A (from transcript A, G2928A according to Masai et al 1993). It results on an aminoacid change of G900S again from isoform A. The paper is accepted, and accesible via: https://www.biorxiv.org/content/10.1101/2020.03.10.985044v1
Associated file is supplementary material from bioRxiv publication. Key information in FigS5 and TblS2.