When a conflict ends by negotiation, it undoubtedly brings high hopes for peace and aspirations for transforming conflicting relationships between parties and communities. As an attempt to understand post-peace agreement issues of conflict transformation, this paper argues that transforming negative relationships between parties/communities into a positive one after signing an agreement is a complex politico-social process. In such a process, implementation of an agreement is as important as integrated peacebuilding activities. The study focused, in this case, is the Chittagong Hill Tracts accord, which stopped armed violence, and assisted a transition process towards peace in spite of associated complexities and caveats including politico-administrative and socio-economic that to a great extent determine post- accord peaceful co-existence of the parties, and communities living there.