Phplinkdirectory category dump questions

[joemar]

1. I added a category dump to my directory without sql query, does that mean I can't add any categories manually?

2. how do I add a new dump without messing up current categories, while getting rid of duplicate categories?

3. does the backup on the phplinkdirectory script restore the entire site, or just a portion of it? my webhost also allows for backups, that's why I ask

thank you