Issue with DB2 Deploy DataType Converter from String to Clob

[m1ssy0un]

Description of problem:
The issue is when I try to do the db2 deploy using static data CSV files. One of the columns is CLOB type and as it put the data into the database, it shows ConversionException: Can't Convert value '' to type interface java.sql.Clob. Not sure if CLOB type conversion is supported or not.

Example of my dbSystemConfig in system-config.xml:
<dbSystemConfig type="DB2" csvVersion="2" dataDelimiter="|" nullToken="null" sourceDirs="sql">

Example DDL to reproduce the table:
//// CHANGE name="init_control" CREATE TABLE CONTROL( CONTROL_ID VARCHAR(255) NOT NULL, CONTENT CLOB(1073741824) NULL, PRIMARY KEY(CONTROL_ID) )

Example of control.csv:
CONTROL_ID|CONTENT
a|""
b|"xxx"

Obevo Version: 8.2.0
DBMS: DB2

Appreciate it if any of you can share ideas and a resolution to this issue soon.