Missing some clients informations

[SilentDave 2]

Hello.

After updating to

ESET Security Management Center (Server), Version 7.2 (7.2.2236.0)
ESET Security Management Center (Webconsole), Version 7.2 (7.2.230.0)

I have many clients that are blank, no info about system, IP, versions, those clients looks like have beed just added.

Why? 

Many clients have yellow background , that means there are some issues but showing their details list, the list is empty.