Italian to English Bus/Financial Finance (general)

I am aware that this is a type of unsecured bond or debenture (not an average bond as is in the KudoZ gloss already). I simply can't make sense of how to phrase this correctly around the two occurrences of the term here below (and no, I don't need the translation done for me, just an idea of the meaning of the term in its context here 2 times. Thanks in advance!

una posizione di chirografo in testa alla fallita BIP XXXXXX riveniente da diverse linee di credito cedute da banche differenti, delle quali solo quella ex ---- risulta insinuata al fallimento in chirografo nei limiti del ridimensionamento