When a party receives and arbitration demand and there is a dispute about whether there is an agreement to arbitrate between the parties, participating in the early stages of the arbitration may be problematic for a subsequent effort to dispute arbitrability. This issue can arise when there has been an assignment or transfer of a reinsurance agreement or the right to the reinsurance receivables to an assignee who seeks to arbitrate against the original counterparty. In a recent case, a New York state court had to address these issues.