Comment 3 for bug 1478998

The pain on the driver side should be very minor.

We already have code in the bagpipe driver to consolidate export RTs from route_targets and export_targets, and import RTs from route_targets and import_targets. If useful, we can make this code available to all drivers.

And yes, if we agree to keep code as-is, the only thing that needs an update is the spec.