The Salesforce Weekly Export Service can include images, documents, and attachments in your organization's backup. When the 'Include Images, Documents, and Attachments' option is selected, images from rich text fields are exported to the 'Other Collateral' folder. This article explains how to use three CSV export files to identify which images belong to which parent records: ContentReference.csv (identifies the field containing the image), RichTextAreaFieldData.csv (identifies the object containing the field), and Objectname_c.csv (identifies the specific record).
These are the files you get from your Weekly Data Export. Objectname_c.csv refers to any custom object.
Here's a specific example of how to find an image from Article Rich Text Field using a specific image URL. Suppose the end user adds an image to Article Rich Text Field. Right click on the image and choose the copy image location, the image URL is the following:
Take 0EM0000000059zq and search for this 15-digit record ID in the data export file ContentReference.csv. The ID in ContentReference.csv is 18-digit so be aware when searching. Take a look at ContentContentId value. In the Data Export zip, look for the folder “Other Uploaded Collateral”. Find the matching ContentContentId file for the actual image.
Rename exported attachments or document files
Rich Text Area Field Limitations
000387694

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