I have no clue why the warning appeared, the odd lobo story continues tho.
This turn he developed magic skills (S3W2) and one of my aboleth became an ordinary unit instead (non-commander).
Overall a decent trade since the lobo has amphibious and more slots.(less hp and worse leadership unfortunary aswell).
All hail Ulugh beg, the eater of infants, aboleths and snacks alike....