Sail numbers start with zero?

I think this is an old topic, but couldn't find anything in the archives.

Just finished using Sailwave to score the Seattle NOOD -- 225 boats, 3
courses, 22 classes. SW performed beautifully, as expected, but for
one thing: Sail num wizard doesn't accept sail numbers like '0710'.

The work around is to just enter '710', dropping the leading zero.
Which was okay once I remembered, after some Very Anxious Moments.
But zero is a number, yes, just like the other nine digits?

A related issue, not too important, is that clicking on the SailNbr
column gets a sort like this:
   002
   013
   23
   55
   074
   0174
   192
   etc.

Not sure what's going on. Looks like sail numbers are sometimes
numeric, sometimes text. Weird.

This with SW 1.95 Build 7.

jrc