A MONAILabel response contains segmentation image & a json with label names. These label names can be written into the LabelSetImage object. However, even if assigned correctly, one label name, with label value 1, is remapped back to what is on the QmitkLabelsWidget.
This behaviour is by design, nevertheless, not amicable for MonaiLabel tool.
See screenshot:
The Label 1 is actually called Spleen.