I'm the wrong person to ask about it -- I didn't work on either the business or technical side of bar data collection, so I don't know exactly how often or when or how it was done.

I do know that if the DC bar provided this public data to people and companies directly, like most of the other other state bars have, this wouldn't be an issue. Unfortunately, the only provider of the data is the bar's own website, so retrieving the data directly from the site is the only real option. Terms of use may or may not change whether that's ok, but we'll have to wait and see what happens.