<div dir="ltr"><div>Hi Michaela,</div><div><br></div><div>I assume both polygons are in the same layer?</div><div><br></div><div>Also - the question is: what layers are selected for snapping (second button). Have you double checked that the layer in question is active?</div><div><br></div><div>I generally also advise to enable "Avoid Overlap on Active Layer" (the button to the right of topological editing) and "self snapping" (the last button in the toolbar) while working on topological editing.</div><div><br></div><div>Finally: which tool did you use when editing the polygons? I am not fully up-to-date with it's working - but back in the old days it only really worked with the vertex editor (maybe this was improved meanwhile).</div><div><br></div><div>If all of the above still fails - can you share a minimal project (one small layer with a few features) to help reproduce the issue?</div><div><br></div><div>Greetings,</div><div>Andreas<br></div></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Thu, 5 Dec 2024 at 08:40, Huesmann, Michaela via QGIS-User <<a href="mailto:qgis-user@lists.osgeo.org">qgis-user@lists.osgeo.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div class="msg6149913978304205114">
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<p class="MsoNormal">Hello all,<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">I wonder why topological editing does not work in my case. <u></u>
<u></u></p>
<p class="MsoNormal">I activated the button but I get gaps because the shared vertices do not move with the moved vertices.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">QGIS-Version: 3.34.9-Prizren<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal"><img width="554" height="369" style="width: 5.7708in; height: 3.8437in;" id="m_6149913978304205114Grafik_x0020_1" src="cid:ii_19395f508dd4cff311"><u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal"><img width="465" height="505" style="width: 4.8437in; height: 5.2604in;" id="m_6149913978304205114Grafik_x0020_2" src="cid:ii_19395f508dd5b16b22"><u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Best regards,<u></u><u></u></p>
<p class="MsoNormal">Michaela<u></u><u></u></p>
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</div></blockquote></div><div><br clear="all"></div><br><span class="gmail_signature_prefix">-- </span><br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><br>--<br>Andreas Neumann<br></div><a href="http://QGIS.ORG" target="_blank">QGIS.ORG</a> board member (treasurer)<br></div></div>