Change in file/folder arrangement of data disks?

Question

I periodically burn data DVDs of new additions to my iTunes library as a backup. I make a playlist of the music, then sort by album and burn as data disks.
Previously, the DVD was arranged like this:
01 First Album Name
..01 First Song Name
..02 Second Song Name etc
02 Second Album Name
..01 First Song Name
..02 Second Song Name etc
50 Fiftieth Album Name
..01 First Song Name
..02 Second Song Name etc
Today I upgraded to iTunes 7.5 (from 7.4.2) and burn a disk and get:
01 First Song Name (part of First Album)
02 Second Song Name (part of First Album)
03 First Song Name (part of Second Album)
04 Second Song Name (part of Second Album)
304 First Song Name (part of Fiftieth Album)
305 Second Song Name (part of Fiftieth Album)
Just a big list of files with no folder organization or album names. This makes a mess of the text files I keep for reference and the disks themselves IMO.
*?

Answer 1

Ooh! This is an even crazier bug than I initially thought.
I tried putting in the pattern manually like so:
            <xs:pattern value="(0|1|2|3|4|5|6|7|8|9|10|11|12)"/>
What I discovered is that it's not the transition from single digits to double digits that's confusing DW, it's the fact that when it evaluates 11, it has already evaluated 1. For example, if I change this to:
            <xs:pattern value="(0|10|11|12)"/>
Then all my 10s, 11s, and 12s pass through just fine.
However, if I tweak that to:
            <xs:pattern value="(0|1|10|11|12)"/>
Now, my 10s and 11s and 12s trigger errors.
For some reason, having the 0 in there does not trigger an error on the 10s in that first example.
Bizarre, eh?