Thanks - that looks like it will do everything that I need, not too big a task for me to move all the categories into one, and then purge that.
For anyone else that is interested, the plugin is https://moodle.org/plugins/local_purgequestioncategory
Thanks - that looks like it will do everything that I need, not too big a task for me to move all the categories into one, and then purge that.
For anyone else that is interested, the plugin is https://moodle.org/plugins/local_purgequestioncategory