I solved the issue by changing all the plugin id’s naming etc. even the company name, likewise it showed on another AU folder on the AU validation list of Logic. After successfully validating it, Logic forgot the previous folder and the never validated plugin name. Then I have changed again the plugin id’s to the original and likewise trapped Logic ! This situation has nothing to do with Juce, it is the weird AU validation process of Logic which with every update of Logic pops up again and again.
              
              
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