Corp A has the bookmark, Corp B does not.
The process is :
Corp A Pilot
- Drag the corp bookmarks to your personal bookmark. This makes a copy
- Drag personal bookmark to your inventory
- If in station; contract or trade your bookmarks to your friends
- If in space; jetcan your bookmarks where your friends can pick them up
- Takes bookmark from contract/trade/jetcan
- Drags them into your personal inventory.
- Drags the to personal bookmarks.
- Drags them to your corp bookmarks. This makes a copy
- Roughly 10 minutes later everyone in Corp B has the copied bookmarks.