Obtaining new 4.7 relative URLs in flexinode fields

The Drupal's core update.php seems not to update URLs in the Flexinode's fields to the new form starting with slash, as it does for ordinary nodes' content (e.g., update #178).

As a workaround one may use the following SQL commands to update links in the text fields:

UPDATE flexinode_data SET textual_data=replace(textual_data,'href=\"node','href=\"/node');
UPDATE flexinode_data SET textual_data=replace(textual_data,'href=\"files','href=\"/files');
UPDATE flexinode_data SET textual_data=replace(textual_data,'src=\"files','src=\"/files');