Thank you, that worked!
I have another questions, though.
1) When I imported the cards from Anki, they show like they are supposed to be, with nice formatting, colors etc. But, when I try to edit, it doesn't show the text:
2) When I copied the text from GoldenDict to Anki, it copied its formatting and colors like shown above, but on Mnemosyne it doesn't work for some reason. I guess it's because anki converts it to HTML code, and Mnemosyne doesn't.
Is there any plugin that could convert the text into HTML code to convey the copypasted formatting and so that I could also edit the card with an HTML code into it?