The copylistitem is a work flow action that can copy a list item between two different sites. That’s seems like to CopyItem action.This had been written with c# .It was developed with 2 main aims:

1. Copy an Item between two different sites.
2. Copy all attachments in destination item

For details on how to install the Copylistitem see the Installation Instructions.
For details on how to work with Copylistitem see the How To Work.