Moving Load Case Combined Option is not working

It can not be.

Please let me know what I am missing.

Hi,

With the 'Combined' option, we can apply two different vehicles or vehicle classes. In your model, one vehicle class 'TM' is used for two sub-load cases. Instead, you should create another same vehicle class but with different name like 'TM2'. 

And assign two different vehicle classes as shown below.

Then, you can see the results as you expected.

Regards,

DK Lee