We are fully aware about the mixed relations between the IMG and Crayter. The IMG doesn't really need these former slaves as they already have plenty of potential recruits themselves and they lack proper facilities to house them. But if there are parts of the IMG who care about the wellbeing of these former slaves, then shipping them to Yuma is the lesser evil of all available choices.
Yuma has developing infrastructure and civil society, it's habitable and despite CR's faults, they are likely going to treat them better than the Cryer or Gallia.
If that is the intent then I recommend rewriting the original post both to make it clear that it is publicly available knowledge that GN/GNI and Cryer are trying to get their hands on the liberated slaves explicitly for experimentation purposes and that the options besides Yuma do not have the capacity to take care of them.