Once insolvency proceedings have opened, the legal nature of your position determines the next step. An unpaid monetary claim, an asset owned by you in the estate, and a payment or security received before insolvency follow different rules.
This article therefore does not decide the detailed issues of retention of title, separation rights or avoidance. It directs you to the appropriate in depth page and identifies the documents needed for the initial classification.
Also check the court notice and current procedural status. The decision tree organises the records for individual advice and review of the relevant periods.