Yes - BLOCKING' is added to the ArtUpload (INP/14542).
The Blocking fields is now per LOC ,so you have to send the files like this
Turn ON :
Then choose which of the blocking fields you want and add them in your file.
As you see above, the blocking is on when value=1 and off when value = 0.
PS! It important to include the location (LOC) in the file.