This is from a mod page saying how to
" Cleaning Mods
-------------
Requires FNVEdit (http://www.newvegasnexus.com/downloads/file.php?id=34703)
1) Open the affected esp file in FNVEdit. Make sure all files are unchecked
other than the mod that you are attempting to clean.
2) Once FNVEdit has loaded the files and you see "Background Loader: finished",
right click on the Files pane and select "Apply Filter".
3) Select "Conflict Status Inherited By Parent" only. Click "Filter".
4) Give it a minuite or two. This part will take a while.
5) Once the Filtering is complete, the entries in the File pane will show up
in color. Right click on the mod you are attempting to clean and select
"Undelete and Disable References".
6) Yes, you're sure you want to edit this file.
7) Right click on the mod again, select "Remove Identical to Master References"
8) Close FNVEdit and save the file. Your file is now clean, and will not cause
crashes due to deleted objects (no promises about other kinds of crashes).
Note: In case of problems caused by this procedure, files edited in FNVEdit
are automatically backed up as
.esp.backup., and
placed in your Data Folder. Deleting the plugins you modified and
renaming this backup file will restore your files to how they were
before you edited them."