The two DTSs are not equivalent.

DTS1 starts at dts1212a.xsd
DTS2 starts at dts1212b.xsd

The diff path is:
Change in a child element of Concept A. 
The content of an annotation/appinfo tag included in the xsd:element has been changed.

EvChild 
  Param[1]:Item: ConceptD 
  Param[2]:Item: ConceptD
    EvDeleted
      Param[1]:XML Fragment: xs:annotation
      Param[2]:null 
      
EvChild
  Param[1]:Item: ConceptD
  Param[2]:Item: ConceptD  
    EvNew
      Param[1]:null
      Param[2]:XML Fragment: xs:annotation

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DTS1 starts at dts1212c.xsd
DTS2 starts at dts1212d.xsd

The diff path is:

No diff path

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DTS1 starts at dts1212e.xsd
DTS2 starts at dts1212f.xsd

The diff path is:
Concept C has a child element in the previous version.
The annotation/appinfo tag is removed in the next version.


**************************************

DTS1 starts at dts1212g.xsd
DTS2 starts at dts1212h.xsd

The diff path is:
ConceptB has an annotation/appinfo tag as child elements in the previous version.
In the next version a key tag is added to ConceptD.

