My parents have had green card for almost 5 years. Now they are out of the US for more than a year; they applied for an reentry permit before they left. Now they might not come back before reentry permit expires(mainly for health reason). I understand they can still enter US in the future with a returning resident visa, But will they lose the 5 years residence they now have?
if they come back with a returning resident visa and decide to apply for citizenship or other benefit that requires 5 year residency, how the year of residency is calculated in that case?