Something is wrong here. THe macro is working. When I paste those sankrit diacritic symbols, they appear as question marks, the same symbols that you were pasting. So then I tried to paste usual characters and that is fine. But the replace field I left the same as you already made. But instead of changing usual letters into those characters, word is putting russian letters instead! So something is wrong with languages here. I do have russian installed on computer, but so what? The word I use is in English although this should have nothing to do with that. And I tried two versions of Word, 2010 and 1013. Same problem.

Btw. I changed macro font into Tamaten, the first font I want to change. Still, when pasting a symbol in the same font it appears as a question mark.