controlling order of texture set list and exporting

hi there.,, does any one know how to control the order of the texture set list?  i dont really mind how it is displayed in painter but my client wants a specific order and making  when exporting to USD as it goes to procreate?

as far as i can see now Painter orders this in alphabetic order. (i have 5 texture sets)  , and Procreate opens it in some weird order altogether..   not alphabetic 

any ideas?