I had a request by a user to change a site template. So, using STSADM, I
backed up the site, deleted it, then restored it to a new URL, then went
back to the original URL and created a new site with a new template so
that they can start migrating the content back.

What I wasn't told (and failed to consider) was that they had also
created a sub-site that they wanted to remain unchanged.

So, using SMIGRATE, I backed up the sub-site at the new URL, deleted it,
then tried to being it back into a subsite of the new URL.

This is where I'm stuck.

SMIGRATE is erroring out and telling me that I already have a template
created for this site and, as such, can not migrate it. Is it referring
to the template of the parent site?

I've tried 3 methods, and all are failing with the same 'template
already exists' error:

- create a new subsite and pick a template
- create a new subsite (but don't finish the template selection part)
- don't create the new subsite

Considering that SMIGRATE errors out with the same error each time, I'm
thinking this has to do with the parent site.

As such, what can I do? Is there anyway to bring in a subsite backed up
via SMIGRATE as a subsite of a new top-level site?

Or do I have to restore this backup file to a yet-another new top-level
URL and have the end-user migrate everything over from that as well?