Hi. That should be all you need to do, although you need to make sure that you are in the right directories.
If there is a '/lang/fr/questionnaire.php' file, it will override the '/mod/questionnaire/lang/fr/questionnaire.php' file. If you find one in the main '/lang/fr' directory, remove it and use the one in the mod directory.
mike
Questionnaire (plugin)
Translation in Questionnaire module v.March26
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