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Saving Project into Project or – Microsoft Community – How to download and install the update

Project adds a new Reports section, backwards-compatibility with Project Server , better integration with other Microsoft. See how you can check compatibility with earlier versions of Word, Excel, and PowerPoint by using the Compatibility Checker. Project , Project , and Project all use the same file format. For example, a project created in Project can be opened in Project
Opening Project MPP files from different versions
Describes the Project update (KB) that was released on breaks backwards compatibility with macros from earlier versions. The files are backward compatible between the version and the 20versions. In your post, you state that the files cannot be.
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