Git/GitHub import from SourceAnywhere

We currently use SourceAnywhere Hosted as our version control server. I'm looking to migrate over to GitHub, and would really like to preserve our 8+ year history.

Has anyone else successfully completed this migration and care to share their tools/process?

Now, assuming that this hasn't been done before, I suppose I'm looking at writing a git fast-import script using the SourceAnywhere SDK or command line client. Being new to git, are there any existing scripts or resources you could direct me towards as a starting point?

Solution

I've finally cleaned up my project and added it to GitHub. You can find it here: SAWHtoGit.

It does a pretty good job of exporting the history into logical changesets, with a few small limitations:

Any file that has been deleted in SourceAnywhere will not be imported into the history, at all, due to limitations in the SourceAnywhere API.
Any files that were 'moved' can be imported, as long as you provide a mapping for the old/new directories.

Other than that, it worked well for our purposes and we were able to successfully migrate our code and history to GitHub. I hope it will be useful to others, as well!