After an upgrade, publishing a Web content fails

• Type: Bug
• Status: Closed
• Resolution: Duplicate
• Affects Version/s: 6.2.10 EE GA1
• Fix Version/s: 6.2.X EE, 7.0.0 CE RC1
• Component/s: Web Content > Web Content Administration
• Labels:
  • backend_test
  • liferay-fixpack-portal-125-6210
• Fix Priority: 3
• Git Pull Request: https://github.com/zsigmondrab/liferay-portal-ee/pull/42
• Bug Type: Regression Bug

STEPS TO REPRODUCE
1.- In a 6.0 installation, create a structure with a repeatable field:

<?xml version="1.0"?>

<root>
    <dynamic-element name="a" type="text" index-type="" repeatable="true"/>
</root>

2.- Create a Web content with the previous structure
3.- In the field type some text and publish it
4.- Edit it again and check the Localized checkbox for the field
5.- In the web content edit form, change the Language to Spanish and type some text
6.- Add a new field clicking on the '+' icon
7.- Mark Localized for this new added field
8.- Type some text and publish it. In database, this is saved this way:

<?xml version="1.0"?>

<root default-locale="en_US" available-locales="en_US,es_ES">
    <dynamic-element instance-id="6XLIJ7sk" name="a" type="text" index-type="">
        <dynamic-content language-id="en_US"><![CDATA[a]]></dynamic-content>
        <dynamic-content language-id="es_ES"><![CDATA[b]]></dynamic-content>
    </dynamic-element>
    <dynamic-element instance-id="KxoCvsi3" name="a" type="text" index-type="">
        <dynamic-content language-id="es_ES"><![CDATA[b]]></dynamic-content>
    </dynamic-element>
</root>

9.- Migrate to 6.2 EE + LPS-45541
10.- In 6.2, edit the article and click on Publish.

EXPECTED
The Web content should be saved

ACTUAL
The following exception appears: