Welcome to the WPML support forum. I will do my best to help you to resolve the issue.
As per the following screenshot, those strings are belonging to a menu.
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So we would like to know if have you completed the translation of the menus. Please refer to the following documentation for more details and let us know your feedback.
Thank you, this has solved. However it is a very long winded task as my main Nav has many options and having to re-add/re-order this is time consuming.