I noticed some incorrect values in my imported idml documents:
The corner radius of a rounded rectangle and one where only one corner is "beveled". 1.2mm (afPub) instead of 5mm (indesign)
see IDML-Code BottomLeftCornerRadius="14.173228346456694"
<Rectangle Self="u42d" ContentType="GraphicType" StoryTitle="$ID/" FillColor="Color/MP Gelb" GradientFillStart="0 0" GradientFillLength="0" GradientFillAngle="0" GradientStrokeStart="0 0" GradientStrokeLength="0" GradientStrokeAngle="0" ItemLayer="u3d6" Locked="false" AppliedObjectStyle="ObjectStyle/$ID/[None]" BottomLeftCornerOption="BevelCorner" BottomLeftCornerRadius="14.173228346456694" GradientFillHiliteLength="0" GradientFillHiliteAngle="0" GradientStrokeHiliteLength="0" GradientStrokeHiliteAngle="0" LocalDisplaySetting="Default" Visible="true" Name="$ID/" ItemTransform="0 1 -1 0 177.63773824558407 91.97222348661418">
See screenshots: