multi-source view insert throwing TEIID30492 error

I'm trying to POC this multi-source INSERT. I have a MySQL DB and Postgres DB on my local machine. Added the drivers, datasource, and created a VBL with 1:1 mapping to my test tables. I created an EBL that is a join of my two tables. Both VBLs and EBL are set to support updates. I'm trying to work through this error.

insert into "Joined_EBL"."joined2"(idtestm, randomstring, idtestp, randomint) values(0, 'randomstring', 0, 12345)
org.teiid.runtime.client.TeiidClientException: org.teiid.api.exception.query.QueryValidatorException: Remote TEIID30492 A multi-source table, Joined_EBL.joined2, cannot be used in an INSERT with query expression or SELECT INTO statement.

I updated my INSERT tab on the EBL transformation page with the following.

FOR EACH ROW
BEGIN ATOMIC
INSERT INTO Postgres_VBL.testp (Postgres_VBL.testp.idtestp, Postgres_VBL.testp.randomint) VALUES (0, "NEW".randomint);
INSERT INTO MySQL_VBL.testm (MySQL_VBL.testm.idtestm, MySQL_VBL.testm.randomstring) VALUES (0, "NEW".randomstring);
END

Postgres table

CREATE TABLE testp
(
idtestp integer NOT NULL,
randomint integer,
CONSTRAINT pk_id PRIMARY KEY (idtestp)
)
WITH (
OIDS=FALSE
);
ALTER TABLE testp
OWNER TO postgres;

MySQL table

CREATE TABLE `testm` (
`idtestm` int(11) NOT NULL AUTO_INCREMENT,
`randomstring` varchar(45) DEFAULT NULL,
PRIMARY KEY (`idtestm`),
UNIQUE KEY `idtestm_UNIQUE` (`idtestm`)
) ENGINE=InnoDB DEFAULT CHARSET=tis620;