Changes made on sales order lines Shipping tab (Header) not reflecting on the lines

User has overridden the requested date on the lines. Now when they're trying to change freight terms on the header, so that it cascades to all the lines at once, but its not happening, potentially due to the Overridden flag. It'll be really inconvenient to manually override each line one by one for the freight terms.

So is this a standard functionality that once Overridden flag is enabled/Yes on the lines, the changes made on the header won't appear on the lines? If so, how can it be bypassed?