Need help with attachments in purchase orders and different organizations

Oracle Purchasing

Version 12.1.3

Question:

The issue I have is related to attachments.

I have 4 organizations in my instance and in one case a supplier have 3 attachments at the Organization level, so, when I create a purchase order in ORG1 it's OK that these documents appear, but, when I am creating a purchase order in ORG2 the same documents appear again and I don't want these documents appear in another Organization.

The thing is that we removed the document at the Organization level and we add them at thte site level, but when I create a purchase order in any of the ORG? none document is seen.