Knowledge Base Help & Documentation:
What Does Additional Option: “Migrate Images & Attachments To Content Body” Mean?
This option allows you to migrate images and attachments (such as PDF, MP3, CSV, TXT, etc.) included in the content’s body of your existing website to the content body of your new website.
If you want to migrate images or attachments included in the content body of your existing website to the content body of a new one, you should choose an additional option – ‘Migrate images/attachments to body’.
Migrate images and attachments included in the content body from Joomla
If you migrate without this option selected, images and attachments on your new website’s content body won’t be displayed:
Note: If the featured image was not set on your existing website, the first image in the content body will be migrated as a featured one only with “Set first image as featured” option.