Force Skill Extraction bug?

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    Hello,

    I wanted to extract my elite Eroding Aura to upgrade it to its unique version.
    Unfortunately, i get a message that i can't do that. Is it intended or is it a bug? I've never had this kind of problem with extraction of force skills.

    I attach the link to the video with mentioned problem.


    I hope it will get fixed if it appears to be a bug.