Background/Objectives: Conversations about end-of-life care or advance care planning are often difficult and emotionally challenging to initiate. Tailoring messages to the specific audiences can make these sensitive discussions more manageable and effective. The Evidence-based Model for the Transfer and Exchange of Research Knowledge (EMTReK), compromising six core components (message, stakeholders, processes, context, facilitation, and evaluation) offers a structured framework for research dissemination and knowledge transfer in palliative and long-term care settings. Knowledge translation bridges research and practice, with its effectiveness depending on stakeholder engagement, tailored communication, and systematic application of evidence in policy and practice. This study explores stakeholder perspectives on a dementia care intervention, using EMTReK as an analytical framework to examine how knowledge transfer and exchange (KTE) actions were implemented across long-term care settings. Methods: A qualitative analysis was conducted on primary data comprising case narratives from multinational research groups involved in the “Caregiver Decision Support” (mySupport) study (2019–2023). Teams from Canada, the Czech Republic, Ireland, Italy, the Netherlands, and the United Kingdom evaluated the mySupport intervention through interviews, with analysis guided by components of the EMTReK model. Results: Facilitated Family Care Conferences were found to be effective mechanisms for supporting knowledge transfer and intervention uptake in dementia care across nursing homes in Europe and Canada. Despite challenges posed by the COVID-19 pandemic, Family Care Conferences adapted through stakeholder engagement, interactive learning, and innovative communication methods. Using EMTReK as an analytical framework, the research team identified key elements that contributed to successful implementation, including the importance of flexibility to accommodate local contexts. Conclusions: The transnational application of the EMTReK model for advance care planning in long-term dementia care highlights the importance of tailored, culturally relevant knowledge translation strategies, which, despite challenges from the COVID-19 pandemic, were successfully implemented through local adaptations and diverse dissemination methods, emphasising the need for further research on their impact on resident and family outcomes.