Architecting and designing : UML 2.0 Lite : UML models : UML Collaboration diagram : Synchronizing collaboration diagram with sequence diagram
  
Synchronizing collaboration diagram with sequence diagram
To synchronize a Collaboration diagram with its partner Sequence diagram, select Draw, Synchronize from the menu.
If you have a Collaboration diagram open and in focus, selecting this command changes the partner Sequence diagram so that it reflects the same information as the currently open Collaboration diagram.
If you have a Sequence diagram open and in focus, selecting this command will change the partner Collaboration diagram so that it reflects the same information as the currently open Sequence diagram.
See also
UML Collaboration diagram