Working Group 4 addresses the preservation crisis facing Europe's vulnerable media and born-digital art collections by defining foundational technical and conceptual documentation baselines. Traditional collection-management systems are poorly suited to the layered, shifting knowledge that complex contemporary artworks generate. To bridge this gap, WG4 connects artists, researchers, technologists and conservators to explore dynamic, open-source and wiki-based collaboration platforms instead of building unsustainable standalone databases. We focus on resolving geo-cultural disparities across Europe through cross-regional analysis, mapping infrastructure gaps and standardising a shared terminology. Ultimately the group works on interoperable metadata schemas and Linked-Open Data strategies, so vital conservation knowledge flows into transnational networks such as the European Collaborative Cloud for Cultural Heritage, safeguarding our shared digital heritage for the future.