I have a dataset (it's a bunch of count variables) at the Census 2010 census tract level, and I want to merge it to a bunch of other datasets that are at the Census 2000 tract level. Because it would be difficult/messy to change all the other datasets, I want to basically send this one dataset back in time and put it into Census 2000 tracts. I'm aware that this is going to be imperfect/require some assumptions about uniformity across tracts.
I've been looking through the crosswalk published as part of the LTDB (http://www.s4.brown.edu/us2010/Researcher/LTBDDload/DataList.aspx), which takes files from Census 2000 tracts to Census 2010 tracts. It seems like I should be able to use these weights to go in the opposite direction as well, right? But I'm having a hard time wrapping my head around it as I read through their code. Has anyone done this before?