If you move to Eretz Yisrael (where no one wearstefilin on chol ha'moed) to live there permanently, do not continue to wear tefilin on chol ha'moed (if that was your custom).
If you are only visiting Eretz Yisrael but not living there permanently, follow your custom.
SituationYour custom is to wear tefilin on chol ha'moed, You are in Israel during chol ha'moed.
What to DoYou still put on tefilin, but only in private, not in public.