unable to submit, shows duplicate data

[henmar]

i was moving my old site to newone ,so i copied only the jos_content from the database. I've installed new ja_submit and my default editor is jce.But im unable to submit content and error pops out showing that item id is already user.Then i checked and found that ja_submit is submitting content with id=0,it doesnt auto_increment the id.SO how do i solve this, is this a joomla problem?
thanks

[subtiricaliviu]

I am not so sure my advice will help you but you can try. For first go to phpmyadmin and select your database. Drop the jos_content table and then press IMPORT button. Press BROWSE , select your saved jos_content and then press OK. This must import your saved jos_content table.
Let me know if this will help. Good luck!

p.s. Don't forget to make a database copy first for backup.