I have created a new SF org & successfully moved all data EXCEPT notes & attachment. From the previous org, I have Attachments folder & Attachment.csv file exported.
In the exported Attachment.csv file (from previous org), BODY column is missing which is required in INSERT/UPSERT attachment operation for the new org. I am trying to migrate all Notes & Attachments from previous org to new org. The below screenshot is for a particular record (I need related Attachments for all records).
When I am trying to export only the Attachments using Data Loader from old org, but Java heap size error & export fails. The total size of the Attachment folder is about 158MB. Both old & current org are Salesforce Production org.