Small suggestion here:
I've noticed the scripts fill in the RELEASETIME as YYYYT00:00:00Z when a according to this thread the whole date is allowed in there and since Rekordbox uses that field to fill in the Release Date why not change the script to convert it to show the whole date + time (if needed) and add a checkmark for Rekordbox users to only add the date as (YYYY-MM-DD).
Also why does the script fill the whole date in for YEAR?