In addition to Mike reply I suggest that you let the program create non code cases by default. Any case not created by AutoPIPE will most likely not a true nonlinear case since AutoPIPE creates all the nonlinear cases that are consistent with the load sequence. You may create more than one analysis set in order to generate more cases by default.
Load combinations not following the load sequence may not have consistent results if they are nonlinear.
In order to create default cases, you may delete all combinations and then ask the program to reset the default cases.