The Certificate Account (a) On or prior to the Closing Date, the Trustee shall establish the Certificate Account, which shall be entitled “Washington Mutual Mortgage Securities Corp. Certificate Account under the Pooling and Servicing Agreement, dated as of October 1, 2004, among Washington Mutual Mortgage Securities Corp., as Depositor and Master Servicer, LaSalle Bank National Association, as the Trustee, and Christiana Bank & Trust Company, as the Delaware Trustee, for the benefit of Washington Mutual MSC Mortgage Pass-Through Certificates Series 2004-RA4 Trust created pursuant thereto”. Promptly after the Closing Date, the Trustee shall communicate to the Master Servicer the account number and wiring instructions for the Certificate Account. Not later than the Business Day prior to the related Distribution Date, the Master Servicer shall direct the Investment Depository to deposit into the Certificate Account the amounts previously deposited into the Investment Account (which may include a deposit of Eligible Investments) to which the Holders of the REMIC I Regular Interests and the Class R-1 Residual Interest are entitled or which are necessary for payment of any Special Primary Insurance Premiums. In addition, not later than the Business Day prior to the Distribution Date, the Master Servicer shall deposit into the Certificate Account any Monthly P&I Advances or other payments required to be made by the Master Servicer pursuant to Section 4.02 of this Agreement and any Insurance Proceeds or Liquidation Proceeds (including amounts paid by the Company in respect of any Purchase Obligation) not previously deposited in the Custodial Accounts for P&I or the Investment Account, and any amounts paid by the Master Servicer in connection with the exercise of its option to terminate this Agreement pursuant to Section 9.01 or any other purchase of Mortgage Loans permitted by this Agreement.
(b) Funds held in the Certificate Account shall be invested at the written direction of the Master Servicer in (i) one or more Eligible Investments which shall in no event mature later than the Business Day prior to the related Distribution Date (except if such Eligible Investments are obligations of the Trustee, such Eligible Investments may mature on the Distribution Date), or (ii) such other instruments as shall be required to maintain the Ratings. The Master Servicer shall be entitled to receive any gains earned on such Eligible Investments and shall bear any losses suffered in connection therewith. If the Trustee has not received such written investment directions from the Master Servicer, the Trustee shall not invest funds held in the Certificate Account. The Trustee shall have no liability for any losses on investments of funds held in the Certificate Account.
Distributions from the Certificate Account (a) On each Distribution Date the Trustee (or the Paying Agent on behalf of the Trustee) shall withdraw from the Certificate Account the Total Distribution Amount (to the extent such amount is on deposit in the Certificate Account) and shall allocate such amount to the interests issued in respect of each REMIC created pursuant to this Agreement and shall distribute such amount as specified in this Section. All allocations and distributions made among and with respect to Pool 1, Pool 2, Pool 3 and Pool 4 in this Section shall be made concurrently.
(b) On each Distribution Date, the Trustee shall distribute the Interest Remittance Amount for Pool 1 for such date in the following order of priority:
(i) pro rata, to each Class of Group 1 Senior Certificates, Current Interest for each such Class and such Distribution Date and any Carryforward Interest for each such Class and such Distribution Date; provided, however, that any shortfall in Current Interest shall be allocated among such Classes in proportion to the amount of Current Interest that would otherwise be distributable thereon;
(ii) pro rata, to each Class of Group 2, Group 3 and Group 4 Senior Certificates, Current Interest (taking into account distributions pursuant to subsections 5.02(c)(i), 5.02(d)(i) and 5.02(e)(i) below, as applicable) for each such Class and such Distribution Date and any Carryforward Interest for each such Class and such Distribution Date; provided, however, that any shortfall in Current Interest shall be allocated among such Classes in proportion to the amount of Current Interest that would otherwise be distributable thereon;
(iii) pro rata, to each Class of Subordinate Senior Certificates, Current Interest for each such Class and such Distribution Date and Carryforward Interest for each such Class and such Distribution Date;
(iv) sequentially, to the Class M1, Class M2, Class M3, Class M4, Class M5, Class M6 and Class M7 Certificates, in that order (the “Class M Priority”), Current Interest for each such Class and such Distribution Date and any Carryforward Interest for each such Class and such Distribution Date;
(v) to the Credit Risk Manager, the product of (a) the Credit Risk Manager’s Fee and (b) the Pool Percentage for Pool 1 for such Distribution Date;
(vi) to the Trustee, any amounts reimbursable pursuant to Section 4.04(b)(i) and not previously reimbursed to the Trustee; and
(vii) for application as part of Monthly Excess Cashflow for such Distribution Date, as provided in subsection (g) of this Section, any Interest Remittance Amount for Pool 1 remaining after application pursuant to clauses (i) through (vi) above.
(c) On each Distribution Date, the Trustee shall distribute the Interest Remittance Amount for Pool 2 for such date in the following order of priority:
(i) pro rata, to each Class of Group 2 Senior Certificates, Current Interest for each such Class and such Distribution Date and any Carryforward Interest for each such Class and such Distribution Date; provided, however, that any shortfall in Current Interest shall be allocated among such Classes in proportion to the amount of Current Interest that would otherwise be distributable thereon;
(ii) pro rata, to each Class of Group 1, Group 3 and Group 4 Senior Certificates, Current Interest (taking into account distributions pursuant to subsection 5.02(b)(i) above, and subsections 5.02(d)(i) and 5.02(e)(i) below, as applicable) for each such Class and such Distribution Date and any Carryforward Interest for each such Class and such Distribution Date; provided, however, that any shortfall in Current Interest shall be allocated among such Classes in proportion to the amount of Current Interest that would otherwise be distributable thereon;
(iii) pro rata, to each Class of Subordinate Senior Certificates, Current Interest for each such Class and such Distribution Date and any Carryforward Interest for each such Class and such Distribution Date;
(iv) sequentially, to each Class of Subordinate Certificates, in accordance with the Class M Priority, Current Interest for each such Class and such Distribution Date and any Carryforward Interest for each such Class and such Distribution Date;
(v) to the Credit Risk Manager, the product of (a) the Credit Risk Manager’s Fee and (b) the Pool Percentage for Pool 2 for such Distribution Date;
(vi) to the Trustee, any amounts reimbursable pursuant to Section 4.04(b)(i) and not previously reimbursed to the Trustee; and
(vii) for application as part of Monthly Excess Cashflow for such Distribution Date, as provided in subsection (g) of this Section, any Interest Remittance Amount for Pool 2 remaining after application pursuant to clauses (i) through (vi) above.
(d) On each Distribution Date, the Trustee shall distribute the Interest Remittance Amount for Pool 3 for such date in the following order of priority:
(i) pro rata, to each Class of Group 3 Senior Certificates, Current Interest for each such Class and such Distribution Date and any Carryforward Interest for each such Class and such Distribution Date; provided, however, that any shortfall in Current Interest shall be allocated among such Classes in proportion to the amount of Current Interest that would otherwise be distributable thereon;
(ii) pro rata, to each Class of Group 1, Group 2 and Group 4 Senior Certificates, Current Interest (taking into account distributions pursuant to subsections 5.02(b)(i) and 5.02(c)(i) above and subsection 5.02(e)(i) below, as applicable) for each such Class and such Distribution Date and any Carryforward Interest for each such Class and such Distribution Date; provided, however, that any shortfall in Current Interest shall be allocated among such Classes in proportion to the amount of Current Interest that would otherwise be distributable thereon;
(iii) pro rata, to each Class of Subordinate Senior Certificates, Current Interest for each such Class and such Distribution Date and any Carryforward Interest for each such Class and such Distribution Date;
(iv) sequentially, to each Class of Subordinate Certificates, in accordance with the Class M Priority, Current Interest for each such Class and such Distribution Date and any Carryforward Interest for each such Class and such Distribution Date;
(v) to the Credit Risk Manager, the product of (a) the Credit Risk Manager’s Fee and (b) the Pool Percentage for Pool 3 for such Distribution Date;
(vi) to the Trustee, any amounts reimbursable pursuant to Section 4.04(b)(i) and not previously reimbursed to the Trustee; and
(vii) for application as part of Monthly Excess Cashflow for such Distribution Date, as provided in subsection (g) of this Section, any Interest Remittance Amount for Pool 3 remaining after application pursuant to clauses (i) through (vi) above.
(e) On each Distribution Date, the Trustee shall distribute the Interest Remittance Amount for Pool 4 for such date in the following order of priority:
(i) pro rata, to each Class of Group 4 Senior Certificates, Current Interest for each such Class and such Distribution Date and any Carryforward Interest for each such Class and such Distribution Date; provided, however, that any shortfall in Current Interest shall be allocated among such Classes in proportion to the amount of Current Interest that would otherwise be distributable thereon;
(ii) pro rata, to each Class of Group 1, Group 2 and Group 3 Senior Certificates, Current Interest (taking into account distributions pursuant to subsections 5.02(b)(i), 5.02(c)(i) and 5.02(d)(i) above, as applicable) for each such Class and such Distribution Date and any Carryforward Interest for each such Class and such Distribution Date; provided, however, that any shortfall in Current Interest shall be allocated among such Classes in proportion to the amount of Current Interest that would otherwise be distributable thereon;
(iii) pro rata, to each Class of Subordinate Senior Certificates, Current Interest for each such Class and such Distribution Date and any Carryforward Interest for each such Class and such Distribution Date;
(iv) sequentially, to each Class of Subordinate Certificates, in accordance with the Class M Priority, Current Interest for each such Class and such Distribution Date and any Carryforward Interest for each such Class and such Distribution Date;
(v) to the Credit Risk Manager, the product of (a) the Credit Risk Manager’s Fee and (b) the Pool Percentage for Pool 4 for such Distribution Date;
(vi) to the Trustee, any amounts reimbursable pursuant to Section 4.04(b)(i) and not previously reimbursed to the Trustee; and
(vii) for application as part of Monthly Excess Cashflow for such Distribution Date, as provided in subsection (g) of this Section, any Interest Remittance Amount for Pool 4 remaining after application pursuant to clauses (i) through (vi) above.
(f) On each Distribution Date, the Trustee shall distribute the Principal Distribution Amount with respect to each Mortgage Pool for such date as follows:
(i) On each Distribution Date (a) prior to the Stepdown Date or (b) with respect to which a Trigger Event is in effect, the Trustee shall make the following distributions, concurrently:
(A) For Pool 1: Until the aggregate Certificate Principal Amount of the Offered Certificates equals the Target Amount for such Distribution Date, the Principal Distribution Amount for Pool 1 will be distributed in the following order of priority:
(1) to the Class A1 and Class A2 Certificates, sequentially, in that order, until the Class Principal Amount of each such Class has been reduced to zero;
(2) concurrently, to each Class of the Group 2, Group 3 and Group 4 Senior Certificates (in each case in proportion to the aggregate Class Principal Amount of the related Group after giving effect to distributions pursuant to subsections 5.02 (f)(i)(B)(1), 5.02(f)(i)(C)(1) and 5.02