"Plot Ring" diagrams are incorrectly saved
the "center size" parameter of PlotRing1 in the enclosed file was 0 before save and when loaded back, it is 50%.
<property name="id">1</property>
<GogObject role="Plot" type="GogRingPlot">
** center-size MISSING **
<property name="vary-style-by-element">TRUE</property>
<property name="id">1</property>
<GogObject role="Series">
<property name="fill-type">y-origin</property>
<property name="interpolation">linear</property>
<property name="style" type="GogStyle">
<outline auto-dash="1" auto-width="1" auto-color="1"/>
<fill type="pattern" auto-type="1" is-auto="1" auto-fore="1">
<pattern type="solid" fore="0:0:0:FF" back="9C:9C:FF:FF" auto-pattern="1"/>
</fill>
</property>
<property name="id">2</property>
<data>
<dimension id="0" type="GnmGODataVector">Feuille1!$A$2:$A$7</dimension>
<dimension id="1" type="GnmGODataVector">Feuille1!$B$2:$B$7</dimension>
</data>
</GogObject>
</GogObject>
<GogObject role="Plot" type="GogRingPlot">
** <property name="center-size">0.5000000000000001</property>**
<property name="vary-style-by-element">TRUE</property>
<property name="id">2</property>
<GogObject role="Series">
<property name="fill-type">y-origin</property>
<property name="interpolation">linear</property>
<property name="style" type="GogStyle">
<outline auto-dash="1" auto-width="1" auto-color="1"/>
<fill type="pattern" auto-type="1" is-auto="1" auto-fore="1">
<pattern type="solid" fore="0:0:0:FF" back="0:63:CE:FF" auto-pattern="1"/>
</fill>
</property>
<property name="id">1</property>
<data>
<dimension id="0" type="GnmGODataVector">Feuille1!$D$2:$D$7</dimension>
<dimension id="1" type="GnmGODataVector">Feuille1!$C$2:$C$7</dimension>
</data>
</GogObject>
</GogObject>