Linkfields inside composite fields are not relinked

Steps to reproduce

1.  Use a dialog with the following definition:

   label: rittal-base.components.locales.label
   
   form: 
     properties:
       link2:
         label: rittal-base.be.components.region.link
         $type: linkField
         datasource:
           $type: jcrDatasource
           workspace: website
       country:
         label: rittal-base.be.components.region.country
         $type: textField
       languages:
         $type: jcrMultiField
         itemProvider:
           $type: jcrChildNodeProvider
         field:
           $type: compositeField
           itemProvider:
             $type: jcrChildNodeProvider
           properties:
             isoCode:
               label: rittal-base.be.components.region.isoCode
               $type: textField
               maxLength: 2
             link:
               label: rittal-base.be.components.region.link
               $type: linkField
               datasource:
                 $type: jcrDatasource
                 workspace: website
   

2.  Create a page and some subpages. In the main page include this new component, linking to any of the subpages.
   
3. Create a livecopy of this page and Relink all pages to livecopy pages. This is the result:
   

Expected results

All links in the content are relinked to the current livecopy pages.

Actual results

Links inside multivalue>composite field are not relinked.

Workaround

Development notes