CIS 4.1.150349.920 VSDV 5105 updated to same version?

Was prompted today to update CIS version - so I did.
Prior to the update I had CIS 4.1.150349.920 VSDV 5105 according to ‘about’.
After the update it is still CIS 4.1.150349.920 VSDV 5105.
Is the update prompt meant to determine the installed version or is it just a blanket notification?

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Did you delete entries in the My Trusted Software Vendors list?

No. Still there at the top.

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What is your current av database number? Mine is currently 5121.

It is currently 5128. The same thing hasn’t happened again.