With respect to a former revolving mortgage for which, before this Act comes into effect, there has been a petition prescribed in Article 398-20, paragraph (1), item (i) of the New Act, an attachment prescribed in item (ii) of that paragraph, the commencement of auction procedures or a seizure prescribed in item (iii) of that paragraph, or an order commencing bankruptcy proceeding prescribed in item (iv) of that paragraph, and for which the principal secured has not been fixed, that paragraph applies on the basis that those grounds arose on the day this Act comes into effect.