If you are intending to leave Ireland for a short period of time (a year or less) to practice overseas, they you should enrol on an Irish professional competence scheme. You can record professional competence activities that you engage in while practicing overseas.
If you are overseas for a longer period of time, they you can participate in a professional competence scheme in the country where you are practicing. When completing your retention of registration form with the Medical Council, you will be required to declare that you are maintaining your professional competence in the country where you are practicing.
NB: If you intend to practice for 30 days or more in Ireland during a professional competence year (1st May – 30th April), you should enrol on an Irish professional competence scheme.
You can find further information in relation to this on the Medical Council website.