Hi sawarsi,
The answer is: yes - the prop edge can cross the periodic seam.
One note of caution, if you are using low-level interfaces to make edges: you may need to split the edges at poles (e.g., on a sphere), using api_split_edges_at_poles.
Hope this helps,
Brian
PS - Here is a scheme script which demonstrates the example in your question.
(part:clear)
(define c (solid:cylinder 0 0 0 0 0 10 5))
(define f (car (filter:apply (filter:type "face:cylindrical?") (entity:faces c))))
(define law1 (law "vec (x -1.0, x - 4)"))
(define edge1 (edge:plaw f law1 0 2))
(define w (wire-body edge1))
(solid:imprint c w)
(entity:delete w)
