Do you mean copy the new generated file in nemesis output to the fnis output?
FNIS + Nemesis
FNIS and Nemesis are not 100% compatible, there's a correct install procedure.
If you ran Nemesis or FNIS once without Nemesis/FNIS Output folder, make sure to delete ALL behaviour files in the overwrite folder. Otherwise these behaviour files inside overwrite folder, will overwrite the behaviour files in the Output folders, leading to a broken install. Both Nemesis Output and FNIS Output are needed to make a proper install.
1. Install FNIS through Mod Organizer 2
2. Install Nemesis after (down) through Mod Organizer 2
3. At the end of your mod Install order, create an empty mod named "FNIS Output"
4. At the end of your mod Install order, create an empty mod after (down) named "Nemesis Output"
5. Edit FNIS executable, check "Create files in mod instead of overwrite" box and select "FNIS Output"
6. Edit Nemesis executable, check "Create files in mod instead of overwrite" box and select "Nemesis Output"
1. Disable Nemesis in install order.
2. Run FNIS as normal, pick necessary options accordingly e.g. Skeleton Arm Patch etc.
3. Open FNIS Output folder and delete the following folders and files inside:
Meshes\actors\character\behaviors <--- there will be bunch of hkx files delete them all
Meshes\actors\character\characters\defaultmale.hkx
Meshes\actors\character\characters female\defaultfemale.hkx
NOTE: DELETE ONLY THE FILES INSIDE "FNIS Output". IF THERE'S NONE, YOU DON'T NEED TO DELETE ANYTHING.
4. Activate Nemesis
5. Run Nemesis.
If Nemesis fails to generate behavior files then reinstall mods that replace behavior files after you generate FNIS. Some mods that replace behavior files are:
-TK Dodge
-Ultimate Combat
-( Zartar's ) Character Behaviors Enhanced
-360 Movement Behavior
-Combat Gameplay Overhaul SE