The ITP/MDK Repository adjusts the include information whenever a document is saved. So, ordinarily this information is up-to-date. When it is not up to date the ITP/MDK Repository will display a clock in the icon of the project and print [Dependency info outdated] behind the project's name. A red clock means that the dependencies for the project as a whole are outdated; a grey clock means that the dependencies of one or more documents in the project are outdated.
However, the ITP/MDK Repository will not always detect that the dependency information is outdated. The reason for this is the infinite number of ways you are allowed to include model documents in other model documents in ITP. It is therefore recommended to compute dependencies after an import or if you detect anomalies in the Included by folder of an include document.
Note that dependencies can only be established if all (include) documents of a project are present in the search paths for include documents of the project. If you import just a section of a project or you import Include documents to a folder outside the search paths, not all dependencies might be computable.
Be aware that the first time you compute dependencies it may take some time. Because of this it is also possible to determine dependencies on Folder, Document and Revision level.