L4D2 Player Count incorrect

I've noticed the first strange problem.
The player count on the L4D2 servers is not correctly shown everywhere.
Only HLstatsX seems to show the correct number of connected clients.
Sourcebans, GameTracker, Left4Maps2000, HLSW don't show the correct number or even only 0.
Even in Steam it seems to be wrong.

L4D seems to be correct.

Very strange.
Never saw something like that before.

So check HLstatsX to see if someone is online.
All other methods seem to be inaccurate.

Maybe we have this problem since the latest L4D2 update.
So it is not related to the root server migration.
Have an idea. Going to test it.

I hope it is working now.
Have to take a look and compare the various player counts (HLstatsX, SourceBans, Steam, Left4Maps2000, HLSW, GameTracker, ...)

Seems like GameTracker just doesn't see servers. It shows always "offline" status for 2019 for example. And there is still stay old IP.

On the forum title page the servers are all online.
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I think the old servers are still present in the GameTracker database.
They will expire automatically when they stay offline.