You mean this mod? Unfortunately, this app doesn't yet support editing GFF files (such as UTI files), or .mod files, so that is likely the issue. Is your issue the model (which I think should work?) or the fabricator on Dantooine?
Hmm it seems like it overrides danm files as well instead of skipping them?
EDIT: Also, currently, if there are conflicts the app overrides them. I'm planning next update to add an option.