Newbie question – what will happen after project Stop?

Planning to run GSA SER, and did not find answer to my question.
Lets say i import target URLs from bought list file.
Run a campaign for some time. Then i stop, and start it again after some time.
Does link building starts from beginning of that list file over again, or is any way to start from that point where i stopped, even when the program was closed ?
Thanks.