Option to export all Alert Rules

Because of the of the way Alert Rules are processed, we need a way to export all Alert Rules definitions so that we can store a copy in our Configuration Management ystem, and also so that we can take a backup before implementing major changes to Alert Rules, so that if the change needs to be reversed, we can refer back to the previous configuration of Alert Rules.  Yes, of course, we can take screen shots, but that would be very time consuming if we had to update lots of alert rules.

A generic Export/Import All Alert Rules option would be ideal.