ImportWP version 0.7 adds new custom field Import functionality allowing you to also import attachments as custom fields, giving you the option of returning either the attachment ID or attachment URL, Small user interface tweaks, and the ability to import attachments from the local file system.
Import WordPress Custom Field Attachment
When importing an attachment as a WordPress custom field, you can download the attachment from the following locations:
- Remote Url
- Local Filesystem
- FTP Server