I have been told by a colleague that it is possible to migrate from Project Server 2007 to Project Server 2013 without the need to migrate through Project Server 2010. This is supposedly possible by exporting the PS2007 files and then directly importing them into PS2013. Microsoft's approach is very database-centric and we are trying to perform this migration as quickly and painlessly as possible. I understand that the .PWA won't migrate this way so my colleague suggested just rebuilding them.

The 2007 environment is quite large (about 250GB with 6 years of archived data) and the installation is quite heavily customized. I would love to know if anyone has migrated 2007 to 2013 this way, and what gotchas might be encountered. Thanks in advance!

Hi,

First of all I'd say that migrating from 2007 to 2013 is not a simple easy and quick operation. It should be considered as an IT system migration project. Even more if you do have customizations and a lot of projects. Note also that there is a large technological and fonctionality gap between 2007 and 2013 versions, with some corner stone new features such as PDP, EPT, departments...

Thus I'd recommend to collect the business requirements since there might be new ones, to build a Project Server 2013 proof of concept to understand the new features, to audit your 2007 instance with any customizations, reports... And eventually to contact one of your local Microsoft Partners who can help you doing such a migration in the best way possible, since most of us have done it several times.

For the database part, you have to first migrate to a 2010 environment and then 2013.

https://technet.microsoft.com/en-us/library/ff603507.aspx#section3