Add the same categories in the destination post than the original post

<div class="aju"></div> <div class="gs"> <div id=":2yr"> <div class="btm">Hi</div> </div> <div class=""> <div id=":2yt" class="ii gt adO"> <div id=":2ys" class="a3s aiL "> <div dir="ltr"> <div></div> <div>When I import a post I would like that the categories from the source post will be the same in the destination post.</div> <div>So in the settings, I have selected "auto post categories".</div> <div>But it doesn't work.</div> <div> <div>Can you tell me how to fix it ? How to get the same categories from the original post?</div> <div>Be aware that I put the same slug for the categories.</div> <div></div> <div>Thanks</div> <div></div> <div>Best regards</div> <div></div> <div>Hannah</div> </div> </div> </div> </div> </div> </div>