What are the limitations of SysCloud backup for Xero attachments?

Due to Xero API limitations, SysCloud backup for Xero does not include attachment relationships (links from an attachment to other Xero records) that are added after the attachment’s first backup; only the relationships present at the time of first backup are captured, and any links created later to additional records (for example, invoices or bills) are not captured. The attachment file itself is backed up. 

Example: 

• Base or first backup: Attachment A is first backed up while linked to Invoice 1001 and Bill 2002. Both links are captured. 
• Incremental backup: The same attachment is later linked to Invoice 3003. This new link will not be captured in the incremental backup. As a result, the attachment will not appear under Invoice 3003 in Archives. Along with that, if you export Invoice 3003, the attachment will not be included in the export. Attachment A and its previously captured links (Invoice 1001 and Bill 2002) will remain available in Archives and for export.