SoapUI Runner test case properties missing

Hi, I'm using SoapUI Runner in LoadUI to make a load test of a web service. I'm using a SoapUI project I previously developed and tested in SoapUI. My project includes only one test case with several custom properties. However, when I access the test case properties via the SoapUI Runner settings I can only see the first test case property. Does anybody have an idea of why this behaviour?

Thanks in advance,

Alejandro