JB
Off topic a little bit, Roseanne had two actresses who played the character Becky. The original had left to continue on her study and Sarah Chalke was bought in a year later to play the role. When the original actress returned after uni had finished both actresses played the role in one series.
Back to soap and if this was an Aussie soap I suspect they would have recast already on a temporary basis, with intros that "The role of Kevin Webster is currently being played by...". I don't think that has ever happened in a UK soap though, with someone playing the role until the original actor could return.
Off topic a little bit, Roseanne had two actresses who played the character Becky. The original had left to continue on her study and Sarah Chalke was bought in a year later to play the role. When the original actress returned after uni had finished both actresses played the role in one series.