remove "-month-day" from YEAR tag, and replace ORIGINALYEAR by ORIGINALDATE ?

[rombat]

Hi,

I'd like beets to write only the year in the YEAR tag. So far it writes me the full date like this 1973-05-25.
I also use the original_date: yes config, but it writes me the date to the tag ORIGINAL YEAR and I'd like to write it in ORIGINALDATE (just like MusicBrainz Picard does actually).

How can I do it ? So far I've only managed to remove month and day from ORIGINAL YEAR by adding original_month and original_day to zero plugin config, but I can't get the result I want.
Thanks in advance and have a nice day