Hi there,
Thanks for reaching out.
Updating the parent WoodMart theme will not overwrite the files or modifications stored in your active child theme. Theme Settings, Custom CSS saved in the database, page content, and your child-theme files will also be preserved.
Before updating, please create a full backup of your website files and database. Then update only the parent WoodMart theme ZIP file — keep the child theme installed and active.
Please note that any modifications made directly inside the parent WoodMart theme files will be replaced during the update. It is also required to update the WoodMart Core plugin and test your customizations after the update, preferably on a staging site first.
Kind regards,
XTemos Studio