Preserving ACLs by in order to use the templates on a publish environment

To use Editable Templates it is necessary to preserve ACLs (Access Control Lists) in order to use the templates on a publish environment. Make the following updates to the ui.apps pom.xml file:

<plugin>
    <groupId>com.day.jcr.vault</groupId>
    <artifactId>content-package-maven-plugin</artifactId>
    <extensions>true</extensions>
    <configuration>
        <group>aem-guides/wknd</group>
        <filterSource>src/main/content/META-INF/vault/filter.xml</filterSource>
        <properties>
             <acHandling>merge_preserve</acHandling>
        </properties>
        <embeddeds>
            <embedded>
                <groupId>com.adobe.aem.guides</groupId>
                <artifactId>wknd-sites-guide.core</artifactId>
                <target>/apps/wknd/install</target>
            </embedded>
        </embeddeds>
        <targetURL>http://${crx.host}:${crx.port}/crx/packmgr/service.jsp</targetURL>
    </configuration>
</plugin>

Note the `properties` and `acHandling` tags.

To verify that it works, build, and deploy your package to an AEM instance. Then go to Package Manager, click over your project package and choose Edit. Go to the Advanced tab. The AC Handling option should be set to 'Merge Preserve'.