Hello,
I'm saving a database in CSV format, then merging it again in.
It generates a nonmissing conflict (I would have expected a "not updated" instead).
Can I know why?
I have isolated both the variable and the observation.
It's importnat for a project I'm working on

Code:
// save CSV
webuse nlsw88, clear
keep if idcode == 4555
keep wage idcode
export delimited "master.csv", quote
// convert csv 2 dta
clear all
import delimited "master.csv"
save "master.dta", replace
// merge
webuse nlsw88, clear
keep if idcode == 4555
keep wage idcode
merge 1:1 idcode using "master.dta", update replace