Background: The psychiatric services in Norway have undergone significant reorganizations during the last decades. This has challenged traditional organizational boundaries. Object: To explore mental health professionals’ experiences of continuity and collaboration across boundaries in the changing organizations. Theoretical perspective: The study was framed by Dorothy Smith’s Institutional Ethnography. Method: Eight focus groups with nursing staff from the community mental health services and the specialist mental health services. Results: The main findings indicated that these professionals understood and articulated their work on the basis of “taken for granted practices”, expressed as two different understandings of continuity: The community mental health workers talked about continuity as the steady relationship between themselves and their patients, while the specialist mental health care workers talked about continuity as their 24-hours availability. Conclusion: The professionals on both sides of the organizational boundaries hesitated to take full responsibility for gaps in the continuity of care for shared patients and blamed each other, the patients, and organizational factors.