TWS 883.1 is a 5 year setback and a composit of problems and bugs. My experience with 883.1 was all bad. I can sum it all up in three words: I hate it.
TWS AutoTrack is completely independent of IB's TWS(developed by a different company not IB). It can however be connected to and download positions from TWS as well as IB statements that are saved to a folder.