Navigation:  Calculation Modules > Analysis > ENERCALC 3D > Ribbons > Create > Generate Loads > Copy Load Case

Create > Generate Loads > Case-Copy Loads prompts you with the following dialog.  

 

 

 

It allows you to copy all loads from one load case to another.  You have the option to delete existing loads in the target load case.  The loads copied may also be multiplied by a factor.  At least two load cases must exist in the model in order to use this command.