(a) In a liquidation proceeding begun in this Commonwealth against an insurer domiciled in this Commonwealth, claimants residing in foreign countries or in states not reciprocal states must file claims in this Commonwealth, and claimants residing in reciprocal states may file claims either with the ancillary receivers, if any, in their respective states, or with the domiciliary liquidator. In reciprocal states, where an ancillary receiver has been appointed, a guaranty association of that state must file its claims with the ancillary receiver. Claims must be filed on or before the last dates fixed for the filing of claims in the domiciliary liquidation proceeding.

(b) Claims belonging to claimants residing in reciprocal states may be proved either in the liquidation proceeding in this Commonwealth as provided in this article, or in ancillary proceedings, if any, in the reciprocal states. If notice of the claim and opportunity to appear and be heard is afforded the domiciliary liquidator of this Commonwealth as provided in section 559(b)¹ with respect to ancillary proceedings in this Commonwealth, the final allowance of claims by the courts in ancillary proceedings in reciprocal states shall be conclusive as to amount and as to priority against special deposits or other security located in such ancillary states, but shall not be conclusive with respect to priorities against general assets under section 544.²