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<p>Found it: for some unknown reason, urldate is split up into
urlyear, urlmonth and urlday. <br>
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<p>\AtBeginDocument{\AtEveryCitekey{\clearfield{urlyear}}}<span
style="display: inline !important; float: none;
background-color: rgb(254, 254, 251); color: rgb(36, 39, 41);
font-family: inherit; font-size: 100%; font-size-adjust: none;
font-stretch: inherit; font-style: inherit; font-variant:
inherit; font-weight: inherit; letter-spacing: normal;
line-height: inherit; orphans: 2; text-align: left;
text-decoration: none; text-indent: 0px; text-transform: none;
-webkit-text-stroke-width: 0px; white-space: normal;
word-spacing: 0px;"> </span></p>
<p>works.</p>
<p>Bernd :)<br>
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