I have 3 different sites and anything I do (including new nodes) needs to be added to all of them.
Just now I've added some nodes in development and need to get them to testing... but the node numbers are already taken.

There are some particular nodes that anyone can add (in my case forum topics only), but some are for admins only.
Is there a way to migrate some nodes without losing all of my forums? Anything that can take a node and assign it a new nid?
I've seen there are some import/export/migration modules around but I'm not sure they address this problem...

Is there maybe any way for forcing forum topics to use independent node ids? Or to start from nid 1,000,000 while the rest of the site stays with the default sequences? At least then I can add/migrate nodes straight to the database without overwriting other things...

Any help will be greatly appreciated!