Office 365 and new server structure

Greetings,

Our office is doing a company wide upgrade of Microsoft office 2010 and Microsoft Exchange Server 2010 to an Office 365 subscription as well as server hardware upgrades. I am not as concerned with the software upgrade, more so with the hardware. It appears that all of our existing server names will be changed for reasons that I do not know, forcing us to reattach and remap all the reference in our DGN files. Considering we have over 300 active drawings....this could be quite time consuming. 

Is there anyone that has gone through the pain of upgrading servers and has created a macro for adjusting existing references in DGN files? I am thinking about writing one myself but figured I would ask here and save myself some time :) Or if anyone has some advice, I am more than willing to listen to what you may have to share with me. 

Thanks! 

Vinny