Okay... some additional findings..
I think i should just go call davis and maybe send them that Jan file so they can break it up into Jan and Feb.
Emailed Davis, and experimented a little. Deleting the rogue future wlk file fixed the download. It downloads Feb, and created a Feb WLK file just fine. The leftover issue is the Jan WLK is huge (4mb) and it got so many duplicates and mistakes I don't know if it's salvageable.
*deleting the Jan wlk (well, after i backed it up) - and redownloading all 513 pages of log. Hoping it'll fill back all of Jan