Applying a template to a sub-project clears the Parent fieldIssue Applying a Project Template to a Sub-Project clears out the Parent fieldCauseDepending on when a Project Template is applied to a Sub-Project, the Parent field is reset based on Template or respected. Please see belowResolutionPlease see the difference between template headers when creating a project. 1. The Template header 'To create a project from a template click here' which is displayed before you create a project implies that irrespective of the details given earlier, a new project will be created with the corresponding template data.(Which will wipe out fields such as "Parent".) 2. The Template header 'To apply template click here' which is displayed after a project is saved/created is meant to be used when applying a template to already created project. ( And this link is visible as long as no project tasks are created.) Hence, While creating a subproject - In order to preserve field values when applying a template, the project should be saved first and then the template should be applied.