bugs in distributed catalogs?

Maybe I missed a discussion on this, but I was working 
with the latest OASIS DTDs that I downloaded from
http://www.oasis-open.org/committees/download.php/12091/cd2.zip
and I had to make some changes to the catalogs to get
things working.

In particular I made the following changes to catalog-dita.txt:

I changed:

PUBLIC "-//OASIS//ENTITIES DITA Topic Class//EN" "topicAttr.ent"
PUBLIC "-//OASIS//ENTITIES DITA Topic Definitions//EN" "topicAttr.ent"

to:

PUBLIC "-//OASIS//ENTITIES DITA Topic Class//EN" "topicAttr.mod"
PUBLIC "-//OASIS//ENTITIES DITA Topic Definitions//EN" "topicDefn.ent"

and I had to change catalog-dita.xml from:

  <public publicId="-//OASIS//ENTITIES DITA Topic Class//EN"
          uri="topicAttr.ent"/>

to:

  <public publicId="-//OASIS//ENTITIES DITA Topic Class//EN"
          uri="topicAttr.mod"/>

Are these known bugs?

paul