It's the same entity; the CA entity number did not change, just the name
You have the federal civil judgment against your debtor.
What have you done (or attempted to do) with your judgment?
Federal judgments are a tad more complicated than most state court judgments.
I think I am beginning to understand your confusion.
However, when you do it correctly, you tend to get your money!
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Take a look at FRCP Rule 69:
Federal Rules of Civil Procedure › TITLE VIII. PROVISIONAL AND FINAL REMEDIES › Rule 69. Execution
(a) In General.
(1) Money Judgment; Applicable Procedure. A money judgment is enforced by a writ of execution, unless the court directs otherwise. The procedure on execution—and in proceedings supplementary to and in aid of judgment or execution—must accord with the procedure of the state where the court is located, but a federal statute governs to the extent it applies.
(2) Obtaining Discovery. In aid of the judgment or execution, the judgment creditor or a successor in interest whose interest appears of record may obtain discovery from any person—including the judgment debtor—as provided in these rules or by the procedure of the state where the court is located.
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You need to consider FRCP Rule 58
Federal Rules of Civil Procedure › TITLE VII. JUDGMENT › Rule 58. Entering Judgment
Rule 58. Entering Judgment
(a) Separate Document. Every judgment and amended judgment must be set out in a separate document, but a separate document is not required for an order disposing of a motion:
(1) for judgment under Rule 50(b);
(2) to amend or make additional findings under Rule 52(b);
(3) for attorney's fees under Rule 54;
(4) for a new trial, or to alter or amend the judgment, under Rule 59; or
(5) for relief under Rule 60.
(b) Entering Judgment.
(1) Without the Court's Direction. Subject to Rule 54(b) and unless the court orders otherwise, the clerk must, without awaiting the court's direction, promptly prepare, sign, and enter the judgment when:
(A) the jury returns a general verdict;
(B) the court awards only costs or a sum certain; or
(C) the court denies all relief.
(2) Court's Approval Required. Subject to Rule 54(b), the court must promptly approve the form of the judgment, which the clerk must promptly enter, when:
(A) the jury returns a special verdict or a general verdict with answers to written questions; or
(B) the court grants other relief not described in this subdivision (b).
(c) Time of Entry. For purposes of these rules, judgment is entered at the following times:
(1) if a separate document is not required, when the judgment is entered in the civil docket under Rule 79(a); or
(2) if a separate document is required, when the judgment is entered in the civil docket under Rule 79(a) and the earlier of these events occurs:
(A) it is set out in a separate document; or
(B) 150 days have run from the entry in the civil docket.
(d) Request for Entry. A party may request that judgment be set out in a separate document as required by Rule 58(a).
(e) Cost or Fee Awards. Ordinarily, the entry of judgment may not be delayed, nor the time for appeal extended, in order to tax costs or award fees. But if a timely motion for attorney's fees is made under Rule 54(d)(2), the court may act before a notice of appeal has been filed and become effective to order that the motion have the same effect under Federal Rule of Appellate Procedure 4 (a)(4) as a timely motion under Rule 59.
Rule 58. Entering Judgment
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Perhaps this will help:
Civil Judgment Forms