If there are changes to new CPS data (e.g. new categorization of industry codes), will historical data be updated for harmonic variables?
For example, let’s say last year I pulled data from 2000-2020. Now I want to extract 2021 CPS Monthly data and append it to the 2000-2020 extract. However, if the harmonic variables have changed in description or categories, then wouldn’t I need to also extract all 2000-2020 data again?
Given un-harmonic data, I know I wouldn’t have to “re-extract” historical data, but un-harmonic comes with the disadvantage of comparing one variable across a long span of time.