unsupported limit types

I have many soapUI Pro tests written in 4.5.2 that contain a few load tests.  I recently installed Ready API.1.2.2.  When I switch to the LoadUI NG Tab an Info message like the following appears for many tests.

The following tests were not converted properly due to unsupported limit types:
LoadTest - 2 Threads - 1 Run Per Thread, LoadTest - 1 Thread - 1 Run Per Thread

What limit type is the message referring to that is unsupported? 

The message also does not list the Project the load test is in.  There are hundreds of tests in the Workspace.  Other than going through each of them one at a time how do you find the offending load test.