There is no single approach to addressing overrides of deprecated artefacts. You must analyze the modifications you made to the original (now-deprecated) artefact and determine a suitable course of action for your customization. Some options are to drop the customization (e.g. if Cúram have since implemented equivalent functionality), to re-apply the customization to the artefact that replaces the deprecated one, etc. There are sources of information that can help you when deciding the appropriate course for your customization, please see Other Sources of Information