Hi,
I wrote a custom migrator which I think is helpful in multi-developer
environment. Please try it out and let me know if you have any
feedback and/or features to be added.
Here’s the link to the project and doc.
http://rubyforge.org/projects/custommigrator/
http://custommigrator.rubyforge.org/svn/plugins/custom_migrator/README
Thanks
Babu