Changing order of definitions in AECOsim Data Group explorer

Is there a way to change the order that definitions are listed in the Data Group Explorer?

Currently the explorer defaults to listing the definitions in alphabetical order, however, I wish to have certain properties at the start of the list and therefore need to change the order of the definitions. I have tried doing this within the DataGroup Catalog Editor, however it appears that you cannot move definitions up or down the displayed list.

I have also tried dragging and moving the property columns in the DataGroup Explorer, however, the column order is not saved and therefore the change is not permanent.

Any help would be much appreciated.