If I assign the values in the comma-delimited 1976-2010 swap values file from here: https://cps.ipums.org/cps/income_cell_means.shtml, (bottom of the page), to the corresponding variables as provided and transformed through ipumsr, will these variables still be formatted correctly for these years and values?
I’m sorry, I don’t think I understand your question.
What formatting are you asking about? What functions are you using to transform the data and assign values?
Some R functions are known to lose things like the value and variable labels, there is some discussion about this in the value labels vignette.