Examples of O/H abundance profiles from our sample, illustrating both cases where central O/H drops are detected (e.g., Centaurus, RXJ0821+0752). Upper left panel: Spatially resolved BPT diagram showing regions classified as AGN (yellow), LINER (green), composite (blue), and HII (red). The gray circles indicate the annulus used to derive O/H abundances. Upper middle panel: O/H abundance map derived using the LINER calibration for the LINER spaxels. Upper right panel: Median radial profile of the warm gas O/H abundance, computed using calibrations and models appropriate for each spaxel depending on the ionization mechanism. The shaded region shows the 85% confidence interval, estimated via bootstrapping, and reflects the range of O/H values obtained from the different methods. Bottom left, middle, and right panels: O/H abundance maps derived using the X-ray/EUV and pAGB models for the composite and LINER ionization, respectively. O/H abundance maps derived using HII calibration for the SF dominated spaxels (if applies). The pink cross shows the center of the galaxy.