Export page content added in page builder to .xliff file

I use Betheme v10.8 in my wordpress 4.2.5 all page contents added in Muffin page builder I mean in Page options -> Add Section -> Add Wrapp ...

Now I want to export all pages content in to .xliff files by using WPML (registered) plugin.

I successfully export the files, edit them in Swordfish, save, upload also successfully but wen I check the translations there is still the default English version in content, all SEO fields and title are translated propperly, only a content no.

Please advice me how to config the Custom fields translation in right way.