@Pepe Garcia
Since you are working with different sets of data I recommend storing the new backups in a separate container or storage account. You are not charged for additional containers or storage accounts, see the pricing page for details. One thing to keep in mind is that many of the performance limits are based on storage accounts and containers. This is why I recommend storing in separate locations. You can find more details on Performance and scalability checklist for Blob storage.
Hope this helps. Let me know if you have further questions or need more assistance.
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