Perforce not sync all files

I need help and maybe you can help me!

We are in action:

  • 2x UE4 Version 4.21.2 (2x Creator Workstation Windows 10)
  • P4V software (when we work on the map the software is always open in the background)
  • 1x Perforce (Helix Server)(Server: Windows 10) (shared network)
  • 1x depot on the server (UE4 project)
  • 1x Local network

On both Creator workstations the source control is set up and also connected.
When I synchronize on the Creator workstation 1 in the open project (UE4) in the content folder a new folder or a blueprint, no matter what I create it will be cleanly synchronized with the server. When I then click on the Creator workstation 2 with the P4V software (Get Latest Revision) then I get the new files. This works great!
The problem is only when I add or delete something on our map in the editor then it is not synchronized, e.g. I delete grass and some rocks and then with Source Control Check out and Sumit. Even if I click in the P4V software directly on the change list of the other workstation (GET REVISION) I get files but nothing is suggested in the editor. Or if my employee sets new trees or what changes on the map I have to be able to see it or do something wrong?