How to backup your data with hosted issue tracking?

I'd like to use a hosted issue-tracking service, but I want to be able to backup my data in case the service goes under.

1. Are there any hosted issue-tracking services that have a "data liberation" str开发者_开发知识库ategy and support you periodically copying your issue-tracking data to your local system?

2. If not, does anyone have a clever workaround for backing up your data using an existing hosted issue-tracking service, even if it's in an unsupported way?

You can do this with FogBugz on Demand. Here is a scrape right off the "Your account" screen:

Download Your Database:
You can download your FogBugz database in three different formats. The FogBugz database format (schema) is documented here.

1. SQL Server 2000
2. Access – This format is temporarily unavailable
3. MySQL