My page has a grid which displays links to external html emails (in the form of posts). When we upload them, we usually place the link in the "Alternative Link" field and that displays the correct link. After Wordpress updated, the links seem to have all changed to be one link from an old post. Was this caused by the update? If so is there a way to revert it back to the old version to recover our links? Is there a way to prevent this from happening in the future?