I have a date field in my footer and I would like it to be shown in ISO 8601 date format and not the local format. I use
right click -> Edit Fields... -> Format
to change it and I saved my document, but when I open it the next time it is reverted to the local format.
I am using LibreOffice 6.4.3.2 on Ubuntu 20.04
Please let me know how I can prevent LibreOffice writer from reverting my date format to local format and always keep it in ISO 8601.