Apakah KITAS Pensiun atau KITAP Pensiun saya akan kadaluwarsa ketika saya meninggalkan negara ini?

No. The KITAS Pensiun dan KITAP Pensiun are multiple-entry permits, meaning you can enter and leave Indonesia as often as you want during the validity period.

Your KITAS/KITAP will tidak expire automatically just because you travel abroad.
It only expires on its official end date, unless cancelled intentionally (e.g., through an EPO).