Hammerhead Karoo 2 Lap-Triggered Interval Support!

As of the latest software update (1.386.1509) released yesterday, Karoo 2 now includes lap-triggered interval support! What does this mean for importing TrainerRoad workouts?

We’ve added support for lap-triggered intervals in structured workouts. You can now import and follow these workouts, and advance these intervals by marking a Lap on Karoo

I don’t see how that has any bearing on TR workouts. I have done a few workouts that I created in TP and imported to my Karoo. I haven’t tried it yet, but I always assumed the little arrows on the side of the screen advanced to the next interval?