Hi
No he was not transferred. They would have carried on with his SLI papers. The best clue is if they give any SLI details - rank and number - on page 3. I was hoping they gave his battalion.
It sounds as if the SLI bit could be the Militia - part-time soldiers. If you cannot get to Kew you will have to wait for Findmypast to put the Militia Attestation Papers online by the end of 2011. Militia forms of that period do not give next of kin, but they give the name and address of his last employer, which you do not get in Regular paper's, plus his address which you may not have, if different from his NoK's.
Ken