In reference to the above thread creating an idea to vote it up and get the feature added to SoapUI. Currently, when cloning, only one target TestCase can be selected. If we have the ability to clone a test step to multiple target test cases, user will not have to perform cloning action multiple times.
Here you can review submitted feature requests and vote up the ones you like! If you can't find the feature you want - go ahead and suggest your own idea. Ideas with the highest rating can be implemented in the product.