I can't tell you were i got this info from but there is a reason why we never see him die onscreen. I hear the opening of the sequel will delve into home he escaped. Turns out when he got stabbed it was simply a flesh wound. This is when it turns out Robau is a master ninja and he started kicking ass! He fights his way through hordes of angry Romulans and then finds to sexy femal Romulans guarding the entrance to a Romulan shuttlecraft.
As you can guess he is also a ladies man! He seduces both sexy female Romulans guards(who also happen to be twin sisters) and convinces thme to let him escape and to come with him. When the new movie opens the Enterprise discovers the pleasure planet Risa! Turns out Robau found the place and seduced all the sexy females there as well and now owns the place and has owned it for the last 25 years. The two sexy female Romulans are now his wives and he has had a child who we will learn will someday grow up to be Sisko's dad. Robau is Sisko's grandpa!
Jason
As you can guess he is also a ladies man! He seduces both sexy female Romulans guards(who also happen to be twin sisters) and convinces thme to let him escape and to come with him. When the new movie opens the Enterprise discovers the pleasure planet Risa! Turns out Robau found the place and seduced all the sexy females there as well and now owns the place and has owned it for the last 25 years. The two sexy female Romulans are now his wives and he has had a child who we will learn will someday grow up to be Sisko's dad. Robau is Sisko's grandpa!
Jason