Incorrect partitioned indices (4282927)

CREATE TABLE "ZWBPMT"."M_NPF_FC_MO_CRCD_PROT_BAL" (
  "AS_OF_DT_SK" INTEGER NOT NULL,
  "PROD_ARGT_PROT_BAL_SEQ_NR" SMALLINT NOT NULL,
  "PROD_ARGT_SK" BIGINT NOT NULL,
  "CRCD_PROT_BAL_PROF_SEQ_SK" BIGINT NOT NULL,
  "ACCT_STRUC_ITEM_DM_SEQ_SK" BIGINT NOT NULL,
  "ISS_DT_SK" INTEGER NOT NULL,
  "ORIG_DT_SK" INTEGER NOT NULL,
  "TESR_END_DT_SK" INTEGER NOT NULL,
  "ETL_NR" BIGINT NOT NULL,
  "ETL_RECORDED_GMTS" TIMESTAMP NOT NULL,
  "ETL_SOURCE_OBJECT_CD" CHARACTER(6) NOT NULL,
    "TRNF_RT_PCT" DECIMAL(10,6)
)
  INDEX IN "BKBPMT01PI01"
  PARTITION BY RANGE ( "AS_OF_DT_SK" NULLS LAST ) (
      PARTITION YR2008 STARTING 54421 INCLUSIVE  ENDING 54787 EXCLUSIVE IN "BKBPMT01PD01",
      PARTITION YR2009 STARTING 54787 INCLUSIVE  ENDING 55152 EXCLUSIVE IN "BKBPMT01PD02",
      PARTITION YR2010 STARTING 55152 INCLUSIVE  ENDING 55517 EXCLUSIVE IN "BKBPMT01PD03",
      PARTITION YR2011 STARTING 55517 INCLUSIVE  ENDING 55882 EXCLUSIVE IN "BKBPMT01PD04" )
  DISTRIBUTE BY HASH ( "PROD_ARGT_SK" )
  COMPRESS YES;

ALTER TABLE "ZWBPMT"."M_NPF_FC_MO_CRCD_PROT_BAL"
  DATA CAPTURE NONE
  LOCKSIZE ROW
  APPEND OFF
  NOT VOLATILE;
--This is system required index
CREATE UNIQUE INDEX "ZWBPMT"."M_NPF_FC_MO_CRCD_PROT_BAL_PK"
  ON "ZWBPMT"."M_NPF_FC_MO_CRCD_PROT_BAL"
    ( "PROD_ARGT_SK" ASC, "PROD_ARGT_PROT_BAL_SEQ_NR" ASC, "AS_OF_DT_SK" ASC )
  PARTITIONED
  ALLOW REVERSE SCANS  COMPRESS YES;

ALTER TABLE "ZWBPMT"."M_NPF_FC_MO_CRCD_PROT_BAL"
  ADD CONSTRAINT "M_NPF_FC_MO_CRCD_PROT_BAL_PK" PRIMARY KEY
    ("PROD_ARGT_SK", "PROD_ARGT_PROT_BAL_SEQ_NR", "AS_OF_DT_SK");

HOWEVER, he used IBM db2look  to displ