I'm trying to use rules via DecisionTable using change-set.
I wrote rules in multiple sheets of single Excel book.
Then I configured my change-set xml like:

...
<add>
<resource source='classpath:data/dtable.xls' type="DTABLE">
<decisiontable-conf input-type="XLS" worksheet-name="sheet1" />
</resource>
<resource source='classpath:data/dtable.xls' type="DTABLE">
<decisiontable-conf input-type="XLS" worksheet-name="sheet2" />
</resource>
</add>
...

But only rules of sheet1 were loaded.

As far as I observed source codes, KnowledgeAgentImpl.java puts resource into "Map<Resource, ResourceMapping> resources". But even if multiple resources are configured in change-set, it appears to me like those resources are considered as the same resource and eventually only one resource will be registered.