Updating existing emotional memories involves the frontopolar/ orbitofrontal cortex in ways that acquiring new emotional memories does not.

Sakaki, M., Niki, K., & Mather, M. (2011). Updating existing emotional memories involves the frontopolar/ orbitofrontal cortex in ways that acquiring new emotional memories does not. Journal of Cognitive Neuroscience, 23, 3498-3514. https://doi.org/10.1162/jocn_a_00057. https://doi.org/10.1162/jocn_a_00057    Request PDF Article