Well...I have been searching info about glengarry dices, I am sure you know all about this... but let me explain in order to see if I understood that or I am wrong...if my info is correct, maybe this thread help rookies as I to learn about this fascinating question...here we go!
First of all I have this info from a little but marvelous book about WWII british badges (a book that I have too in my little british colection!)...you can see the dices of different scottish regiments..
Well...after WWII some glengarries changed...In 1959 Royal Scots Fusilier and Highlander light infantry merged into the Royal Highlanders fusiliers and keep the dice...but both changed the badge to another new
After that in 1961 Seaforth and Queens own cameron merged too into queens own highlanders...they kept the badge of Seaforth, but the glengarry was adopted without dice (as Cameron was)
Is my info correct?? I hope so!