Export TourML multilingual button gives wrong language nodes

[hannolans]

I have stops in three languages (Dutch, English and French). Dutch and partly English stops are is filled, French not. When I click on export TourML multilingual button I get all the stops with a French language tag. The other languages are not included.

[hannolans]

I tested and the language tag of a stop doesn't correspond with the language of the node itself. That's because the language tag is filled with the language code of the Drupal user interface.
Patch in preparation.