You should not do it this way. Just use the official Navigraph app to uninstall the existing Navigraph data, and use the same app to reinstall it. The link to the location of the Navigraph data has to be placed in a very specific location in content.xml, and the official installer is the only way to insure that entry is properly made.
If you move the Navigraph folder to another location, and then run the uninstaller, it deletes the reference in content.xml. If you then move the Navigraph folder back to Community, it has no content.xml reference, which will lead to all kind of problems. There is no need to “preserve” the Navigraph folder by manually moving it elsewhere. Just use the Navigraph app to delete the existing files, and install a fresh copy.