Migrating data from one repo to another: timestamps

I'm preparing to move the bulk of repository A to repository B. I
have this scripted via svnadmin dump/svndumpfilter/svnadmin load and
it works, however I'm concerned about timestamps.

The resulting repository no longer has increasing timestamps b/c
repository A's timestamps were faithfully preserved when the revisions
were appended to repository B. We use date-based checkouts and IIRC
subversion does some variation of a binary search to translate dates
into rev #s -- if so, this would clearly be broken by this new
repository. I'm thinking about rewriting all the timestamps in the
dump log before reloading it, but a couple questions:

1) Am I correct that, absent such re-timestamping, the resultant
repository might break svn's date-based checkout feature?
2) Am I okay simply duplicating the same timestamp for all the
revisions in this log? (I would just use the timestamp of the last
revision prior to the 'svnadmin load'.)

Thanks!
Kylo

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Received on 2009-09-16 19:01:17 CEST