Questions about queue

[Spectator]

I have a Zabbix test environment with three proxies.
Regarding one of the proxies, I saw this a few days ago in the Administration / Queue (Queue overview by proxy):




In the Queue Details (extract):




I think this missing information will never come again, what can be done? Can these values delete from this view somehow? Or will the numbers in the "More than 10 minutes" column only increase during the operation of Zabbix?

And what could be the reason why no data is received if the
ProxyOfflineBuffer = 48
is set in the proxies?

[cyber]

Is that host removed from system? If you remove it from Zabbix, those things from queue will also disappear. Probably removing all items/triggers from host has same result.

[Spectator]

Dear cyber,

Thank you for your answer, this is indeed what happened: my colleagues terminated some of the hosts and did not notify me.