redistributePar -decompose with constraint

Hallo,

redistributePar -decompose doesn't work with constraint (see log.redistributePar.cosntraint). I have run incompressible/pimpleDyMFoam/mixerVesselAMI2D with singleProcessorFaceSets ((AMI -1));

without the constraint, it works (log.redistributePar) and with decomposePar (log.decomposePAR) as well.