Nothing happens when you try to run a dynamic test list from the IDE on an upgraded project - you have to abort the test list.  Using the command line runner seems to work fine...

If you create a new list in upgraded project get mixed results - either the test claims to run and run green, but the tests never actually run (browser opens and closes quickly) or you get same behavior, just hangs and never runs.

It also looks like if you add a new test to an old project with the new test conforming to the dynamic list, the test will be run.