Using Business 1.4:
Any visit to the configuration main page and then a save, results in a short version of the order number format string being saved. Once entered and saved, all is fine, but when read back in on your next visit, only the first 13 characters are shown, and if not fixed before saving, the abbreviated version will become the active format.
Actual Example from my site:
Format saved as: BPW-{id size="5"}{date format="mdy"}
Next visit to the same screen: BPW-{id size=
I have to reset this value on each visit to the configuration screen.
Hopefully you can address this minor issue in the next version.
Thanks, Bill