In the myeloma project, we pre-segment some structures for our medical partners that they have to inspect and correct with MITK. The newest version (v2021.02) does load and display the segmentation but does not show it in the segmentation plugin which is needed to correct it.
I tried with some older versions of MITK and it worked there.
Example data is here: https://hub.dkfz.de/s/aF5iKe6YFXjSQ9C