QT Linguist tool not picking up right translation

I am trying to use Translation feature in QT. There are more than 4000 translation needed to be done for one language. And I have to do this for more than 15 different languages. So, I decide to write language.ts files by shell scripts. After generating my language.ts succesfully, I open the file in notepad++ (in windows) and I can see the expected translation in the file. For example, in Brazilian language, following is the translation code is language.tsfile:- Cancel Отказ Now when I try open the file in QT Linguist tool, I got following error:- Parse error at lang_Brazil.ts:1:38:Encountered incorrectly encoded content. As details provided in this website , I replace encoding value utf-8 with ISO-8859-1 . Now I can open the file in QT Linguist but the translation is showing wrong characters, ex:- for Cancel it is showing Îòêàç (expected translation is Отказ). Please confirm why it is not taking right translation in QT linguist while I can see it if I open language.ts file in notepad++.