(a) Within six months after the first publication of notice of appointment required by Section 23.17 of this code, a consenting creditor must file with the assignee a statement, sworn to by the creditor, his agent, or attorney,
(1) describing the nature and amount of the creditor’s claim against the assigning debtor; and
(2) stating that
(A) the claim is true;
(B) the debt is just; and
(C) all proper credits or offsets have been allowed against the claim.
(b) The assignee shall allow a claim filed under Subsection (a) of this section against the assigned estate unless he has good reason to believe the claim is not just and true.

(c) If a creditor does not file a statement in the time required by Subsection (a) of this section, he is not entitled to receive any of the assigned estate.