Deleting old backup period in backup and restore

I just need to confirm deleting old backups from Windows Backup and Restore.

After time Windows' Backups will fill up an external hard drive.  Is it safe to delete all but the newest backup period or will I lose information?  I have never gotten a clear answer in my online searches.

What is best practice?
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Nick RhodeIT DirectorCommented:

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Each backup update contains whole files (rather than changes to files). If you backup the same files, then you could delete the previous backup files.
MagsOwnerAuthor Commented:
Thanks NRhode...that is exactly what I wanted!!
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Windows 7

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