If a Designated Agent is unable to identify or locate a Copyright Owner or Performer who is entitled to receive a royalty payment under this part, the Designated Agent shall retain the required payment in a segregated trust account for a period of three (3) years from the date of payment. No claim to such payment shall be valid after the expiration of the three (3) year period. After the expiration of this period, the unclaimed funds of the Designated Agent may first be applied to the costs directly attributable to the administration of the royalty payments due such unidentified Copyright Owners and Performers and shall thereafter be allocated on a pro rata basis among the Designated Agents(s) to be used to offset such Designated Agent(s) other costs of collection and distribution of the royalty fees.