v16 Archimate exchange file generation

[Mats Gejnevall]

When I add a Grouping element to an Archimate model and then try to generate an Archimate exchange file, the generation fails. When I remove the grouping element and save everything it still fails. If I restart v16 and try to generate (without the grouping element), the exchange file generation works?

It that a feature??

When I xmi export the same model to v15.2 and add the grouping elements, and generates the exchange file,  it works ok!!!