When converting schema from DB2 to Aurora PostGreSQL, sequence's specification is automatically converted from CYCLE to NO CYCLE

I used SCT to convert the DDL below from DB2 to Aurora PostGreSQL.

DB2: CREATE SEQUENCE XX_SCHEMA.SEQ_NO AS DECIMAL(9) START WITH 1 INCREMENT BY 1 MAXVALUE 9999999999 CYCLE;

then I got this DDL as a result.

PostGreSQL CREATE SEQUENCE INCREMENT BY 1 START WITH 1 MAXVALUE 9999999999 MAXVALUE 1 NO CYCLE CACHE 20;

Please tell me how this can happen. Is this a bug of SCT?