Issue:
If a new Project called Test 1 is created based on an existing Project called Test, the application throws an error Entries must not have overlapping values while saving the new Project.

Cause:
This is most likely the existing project has disabled users on the project team. Current logic of our application does not allow creating a new project based on an existing project that has disabled users on the project team.

Solution:
Removing the disabled users from the existing project team should resolve the issue.

Refer the attachment