For the SignPuddle 2 update, I removed the custom export. It was
not straight forward to keep the custom export, so I dropped it to
save time and sanity.
It looks like you were accessing the Data Format page for the XML
example you provided.
Just to reiterate, the XML can be accessed on an individual basis.
Under each entry with a sign, there is a "Sign data: FSW or CSW"
line with links.
If you clink either the FSW or CSW links, you will be brought to the
Data Format page.
In the XML Options section, select "Symbol Identification" as "ID".
For "Data Content" you have 3 options.
It may be possible to fix the custom export, however it would not
use the XML for the sign data. Also to consider, the symbol IDs
in SignPuddle 2 are based on the ISWA 2010.