[support] Deploy Module with Differing Sites

[Luke]

Hello

I'm attempting to use the deploy module to move several thousand nodes of 
multiple types, from one site to another.
[A project which was supposed to be done today.:(]
The sites are at the same D6 version, have the same modules more or less, 
and aught to be compatible.

However, one is using core themes, and the other (destination) is using 
fusion and its ilk; and the receiving site has nodes of its own which 
should not be destroyed when the new nodes from the source site come over.

The instructions for deploy (http://drupal.org/node/408774) indicate that 
the destination site should be an identical copy of the source site, 
created after the deploy module is configured.

That isn't possible here--these are concurrently running sites, each with 
individual content.

I am guessing that I can still setup deploy, and must somehow make 
provision for differing unique IDs for terms and so on, but otherwise it 
could potentially work?

Any advice appreciated.

Luke