Hi normal_ST,
This is expected behavior. The assets are looking for specific filepaths, so moving the folder without using the migrate option breaks those references and your assets will have to be manually re-referenced when placed in a new project or onto a new PC. What you could do is upload the initial project with your assets to perforce, have them download that project then migrate the contents using the migrate feature. This would allow them to properly move the assets to prevent referencing errors.