Webel: SysMLv1: MagicDraw/Cameo: CON: Using anonymous property and/or action names is not ideal for Element Compartment and Note callout displays when Usage level allocation is used. But allocation table and matrix views are better anyway.
Webel: SysML: SE: A functional analysis «whitebox» Activity may have swimlanes that Allocate to logical subsystems (logical handlers) within the 'problem' zone or to design/implementation level blocks.
SysMLv1: UseCase scenario representations: On use of Activity Diagrams with swimlanes and/or Sequence Diagrams (Interactions): Actor or block-based custom «actor» on 1st (typically left) Lifeline/Swimlane, System/Subsystem on 2nd Lifeline/Swimlane
Parts in these systems may interact by many different means, such as software operations, discrete state transitions, flows of inputs and outputs, or continuous interactions. Source OMG Systems Modeling Language (SysML) 1.6
MagicDraw/Cameo: If you remove a CallBehaviorAction from an ActivityAllocatePartition swimlane any previously created allocations won't be removed, but you can delete them using the Allocations section of the Specification dialog of any relevant element.