Answer to your questions: Are you only opening the one project? No, wherever the resource is linked, all the files are open Are you using a resource pool? Yes Are you using Project Online or Project Server? – It’s not online for sure, I have it on installed it in two individual systems and both are connected through server.
Project only manages resource allocation for open projects unless you are using a resource pool or Online/Server. Please provide additional information if you are still having this issue.