Replacing Coaches

Im trying to put coaches on the right teams and add new coaches, but every time I start the game it crashes!
All I did was switch the team numbers for some coaches and change the names and coach IDs for others

Which program are you using to edit coaches.dbf?

DB Commander
Edit: NVM, I figured out what I was doing wrong.
I found out how to put Rick Carlisle as the Maverick's head coach

But i've got another thing that concerns me, if you're replacing an old coach with a retired one, what can you do to make the game recognize that coach? The game wont recognize him because I made up his coach ID