XSD 1.1 issue: when did timezones cease being durations?

With some dismay, I discovered this morning that the
treatment of the seven-property time model in our
status-quo document describes the timezone component
as as integer (representing a number of minutes).

This is a change from 1.0, which describes timezones
as durations, and it conflicts with the treatment of
timezones in the QT data model.  (Since normalization
and denormalization involve addition and subtraction
of timezones to dateTime values, treating timezones
as integers would lead to some inconvenience for F
and O.)

Perhaps I was asleep at the switch at the moment when
we discussed this, in which case I apologize to
the Working Group and anyone else concerned for failing
to raise this issue then.  But I think this is an
important, though small, issue.

I propose that as a matter of some urgency the WG
ask the editors to prepare a wording proposal changing
timezones back to being durations.

-CMSMcQ