How do you manage multi-model associativity in CATIA V5 for a complex automotive BIW assembly?

Managing CATIA V5 multi-model links for BIW involves: establishing master geometry in a Product Data Management context, using Publication elements to expose controlled interfaces, creating contextual links through Copy/Paste Special with links, managing link status through Tools > External References, implementing update strategies (manual/automatic), resolving broken links through Edit Links, and maintaining document structure with CATProduct hierarchy. Best practices include minimizing link depth, using skeleton parts for key interfaces, publishing only necessary elements, and implementing naming conventions for traceability.