Didn’t the Comprehensive Peace Agreement (CPA) of January 2005 between the Government of Sudan and the Southern rebels stop this practice?

The CPA did suspend the abduction of slaves in Southern Sudan. However, it made no provision for the liberation of women and children who had been captured in Southern Sudan and taken as slaves to the North before the signing of the CPA. Moreover, as the CPA was being negotiated, a new war broke out in the northern region of Darfur where armed Black African Muslim groups launched a rebellion against the Government of Sudan. The enslavement of Black African women and children is a feature of the civil war in Darfur.