Sale Price Not Populating | WordPress.org

I’m having an issue with the sale price not populating in this feed. It had been working up until about a week ago and we haven’t changed anything.

Feed URL is here and you can see the sale price is blank, but we have many products with a sale price. https://memusclenutrition.com.au/wp-content/uploads/woo-feed/google/xml/feed.xml

I tried regenerating the feed, clearing the cache, setting the sale price to other options and setting it back again. I can confirm that we have the Woocommerce Default schema override turned on in settings.

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