Baking output name marmoset

Orome

Hi everyone can anyone help me with this😔

if I just name file extension on output, it gives me prefix underscore before texture set name. But I need just texture set name ( without underscor or any other names). I need this so that everything works automatically without breaking the pipeline so I can adding this texture to substance painter. so that later, when making edits, everything works automatically

any ideas how to remove the underscore without resorting to subsequent renaming ?

P.S options with automatic renaming (such as Bulk Rename Utility or total commander) are not suitable because it breaks the pipeline

Orome