Validation error in migration due to removed attributes in transaction subsystem

# setup source server
cat <<EOF > setup.cli
connect
/subsystem=transactions:write-attribute(name=path, value=var)
/subsystem=transactions:write-attribute(name=relative-to, value=jboss.server.data.dir)
shutdown
EOF

$JBOSS_EAP_64/bin/standalone.sh &
# wait for server start 
$JBOSS_EAP_64/bin/jboss-cli.sh --file=setup.cli

# run migration
sh $JBOSS_SERVER_MIGRATION/jboss-server-migration.sh -s $JBOSS_EAP_64 -t $JBOSS_EAP_72 -n

OPVDX001: Validation error in standalone-full-ha.xml ---------------------------
|
|  474: 
|  475: <subsystem xmlns="urn:jboss:domain:transactions:1.5">
|  476:     <core-environment path="var" relative-to="jboss.server.data.dir">
|           ^^^^ The attribute 'path' is no longer supported
|
|  477:         <process-id>
|  478:             <uuid></uuid>
|  479:         </process-id>
|
| The primary underlying error message was:
| > ParseError at [row,col]:[476,13]
| > Message: WFLYTX0031: The attribute 'path' is no longer supported
|
|-------------------------------------------------------------------------------
2018-07-10 12:00:45,180 ERROR [org.jboss.as.server] (Controller Boot Thread) WFLYSRV0055: Caught exception during boot: org.jboss.as.controller.persistence.ConfigurationPersistenceException: WFLYCTL0085: Failed to parse configuration
	at org.jboss.as.controller.persistence.XmlConfigurationPersister.load(XmlConfigurationPersister.java:143) [wildfly-controller-6.0.0.Alpha3.jar:6.0.0.Alpha3]
	at org.jboss.as.server.ServerService.boot(ServerService.java:377) [wildfly-server-6.0.0.Alpha3.jar:6.0.0.Alpha3]
	at org.jboss.as.controller.AbstractControllerService$1.run(AbstractControllerService.java:372) [wildfly-controller-6.0.0.Alpha3.jar:6.0.0.Alpha3]
	at java.lang.Thread.run(Thread.java:748) [rt.jar:1.8.0_171]
----------------------------------------------------------------------
 Migration Result: FAIL
----------------------------------------------------------------------