full-width Latin missing from confusables data

While looking closer at the current confusables data, I've noticed that
several of the fullwidth code points seem to be missing from the
confusables data. For example, U+FF4D FULLWIDTH LATIN SMALL LETTER M
does not exist as a confusable for U+006D LATIN SMALL LETTER M, as well
as several others I've noticed.

Was this intentional?

Also, I'm not clear on the difference between the confusables.txt and
confusablesSummary.txt - are these meant to provide the same data in
different formats?

-- 
Best regards,
Chris Weber - chris@lookout.net - http://www.lookout.net
PGP: F18B 2F5D ED81 B30C 58F8 3E49 3D21 FD57 F04B BCF7