Server Backup, 1 recovery point after last backup?

[DCUK6]

Hi,

 

Checked our backups today and Windows server backup is now showing as 1 recovery point from yesterday.

 

I have other backups using another piece of software but this is my easy backup as its all local.

 

Last nights backup only transferred 20GB so its not a full server refresh where it copied 100's GB.

 

Cant seem to find a reason why it would have deleted all previous backups. Bit worrying if we were to rely on this single backup resource.

It did have about 40+ backups on my last check.

 

The backup location has 30% free space on it.

 

Anyway to check what happened.