GoZ subtool name changes on export (for blender)

Hi, when I press goz button to export subtool to blender, subtool name often changes for no reason (but not alway). For example if I want to export subtool named:
Then often zbrush changes name of subtool to:
So after importing to blender, new tool is not recognized as updated object, but as new object (objects are recognized by name).
I figured if I go to: ‘C:\Users\Public\Pixologic\GoZProjects\Default’ and here I delete all the ‘cube’ named files, then zbrush won’t change subtool name on goz export.
Is there a way to force zbrush to override old object files in above directory, without changing subtool name? Or is there another way to make zbrush do not change file (subtool) name?