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- Do not store order attribute when is null.
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@ -68,7 +68,7 @@ mindplot.persistence.XMLSerializer_Pela = new Class({
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parentTopic.setAttribute("position", pos.x + ',' + pos.y);
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var order = topic.getOrder();
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if (!isNaN(order))
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if (typeof order === 'number' && isFinite(order))
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parentTopic.setAttribute("order", order);
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}
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