Error - The strings have not been created yet when opening the latest version of a LPU Project

When opening a SDL Passolo LPU Project, all of my string lists appear that they have not been created yet, even if in the Translated column, they appear 100% translated and when I open the file outside Passolo I see the translations. I have the latest version of the Passolo LPU Project and I need to leave a comment on one of the string from the string list, but I can't do that because of this.
Can anyone help me please? 

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