I moved Exchange 2003 on 03Server to Exchange 2010 on 08Server. I went through the various steps and have finally uninstalled Exchange 03 from the old server. Everything appears to work fine with the exception of some random 0x8004010f errors that appear to have something to do with autodiscover. There are also a few problems with individual users updating their global address list. These are annoying, but not stoppers. The point is, the system is NOT running perfectly yet.
The reason for my post is I would like to use the old Exchange Box (which is now my best server) to upgrade some of my older systems. To do so, I need to remove the old Exchange Databases: pub1.edb, pub1.stm, priv1.edb, and priv1.stm. These are still fairly large files, which makes me wonder if they contain important stuff, being as I thought I moved everything that needed to be moved. Is there any situation where I will need to access these files to fix something on the new box? Or can I safely delete them?