Vbulletin doesn't allow auto nested-quotes (i.e. if you click "reply with quote") and is designed to only quote what the last person has said... Bearing in mind, that is what you are quoting!!! There are a number of reasons for this, which I agree with from an administrator point of view, including:
- Stops really long quote strings when going down the page (i.e. a million times over)
- Stops the database being clogged up with unrequired text, therefore ensuring your database lasts longer!
Although there are ways round this... my advice would be to leave it as is!
If you desperately need to use nested quotes, then you can do this yourself using the inbuilt quote button when replying... or physically adding a [ QUOTE ] at the start and a [ /QUOTE ] at the end of what you want to capture... It's a bit more work at the time, but, protects the forum in the long run!