YOU SAID:
my sister used to live in London but now she lives in France
INTO JAPANESE
私の妹はロンドンに住んでいましたが、今はフランスに住んでいます
BACK INTO ENGLISH
My sister lived in London but now lives in France
INTO JAPANESE
私の妹はロンドンに住んでいましたが、現在フランスに住んでいます
BACK INTO ENGLISH
My sister lived in London but now lives in France
You've done this before, haven't you.