I've created my own Itemtype extending Category:
<itemtype code="BrandCategory" extends="Category">
<attributes>
<attribute qualifier="hide" type="java.lang.Boolean">
<persistence type="property"/>
<defaultvalue>java.lang.Boolean.FALSE</defaultvalue>
<modifiers read="true" write="true" optional="false" search="true"/>
</attribute>
</attributes>
</itemtype>
However, when I assign this category to any Product that already has other categories and I do a catalog synchronization, all the categories do copy to online except the custom ones (BrandCategory).
How can I fix this bug?

