4th Black Watch to Camerons transfer?

Hi, I know it's a long shot but I was wondering if anyone had come across a transfer of men from the 4th Black Watch to the Cameron Highlanders, in particular the 2nd Battalion? I have come across a couple of men who were with the 4th BW in Gibraltar and who return to the UK mid 1943 and who later served with the 2nd Camerons in Italy. I am wondering if they were part of a larger draft. As I say it is a long shot and yes I realise the two I have found may have been posted at different times in '43 and therefore are unconnected, but I thought it was worth the question. Looking at the Cameron's who died in Italy, there are at least two men who appear to have BW numbers.
Thanks for looking

 

Hi, The 4th Battalion Black Watch left Gibraltar for the UK on the troopship Stirling Castle on the 25th April 1943.