TargetAttributes is not being updated in project.pbxproj

Hi, I wrote a script to delete some targets and create some build configurations. The script works fine but the TargetAttributes from `project.pbxproj` is not being updated. I realized that if I use Xcode after running the script and do something insignificant the file is updated and everything is okey, but I want to avoid that step. Is there any command to update the `project.pbxproj` file? Something like `clean` `format` or something like that?