Yes,
the software will have to be transferred.
from past experience of having to do this several times,
the software has to be transferred by the one who the software is registered to.
sometimes they will help, sometimes they won't.
i finally gave up on an oem and i notified rockwell automation of the problem.
even if the seller transferred the license to you, what version are you buying, and is it in support?
regards,
james