Revision numbers to what degree are they permanent

I am setting up another subversion environment and I thought I might use
revision numbers as build numbers. It means that build numbers will ratchet
up rather quickly in a non-contiguous manner, but that may be acceptable.

If I use revision numbers as build numbers I need to know to what extent I
can rely upon revision x always being revision x. The only case where I
could envision a revision number's meaning shifting would be in an
export/import or dump/load situation.

QUESTIONS:
- If I dump and load my repository, will my revision numbers be the same?
Will r2030 still be r2030?
- If I dump and partially reload will the revisions be renumbered giving the
new starting point?

Thanks for the help....

-- 
Peter Kahn 
peter.kahn@ironmountain.com
Iron Mountain Digital 
IM: pkahn@imserver, citizenkahn@jabber80.com, citizenkahn@googletalk.com 
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