step zero (the bare minimum): until you write a reasonably comprehensive 
integration test suite, do not pass go. do not collect $200.

On Mar 16, 2014, at 8:28 PM, Chris McCann <[email protected]> wrote:

> do both the old and new versions of the app have decent test coverage?  If so 
> then you may have a decent safety net for doing the migration, sort of a 
> "canary in the coal mine" setup.  If not, you've got your work cut out for 
> you.

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