Mike and I were discussing the changes I made in http://svn.apache.org/viewvc?view=revision&revision=927243 to fix issue #3020 and which were backported to 1.6.x. There is a regression in that fix and I am changing my vote to -1 and pulling it from 1.6.x (and today's roll of 1.6.10).
The fix in r927243 addressed the problem of mergeinfo in a partial dump of a repository, specifically: We dump -r(X>1):Y from repos A then load that dump into repos B. If there is mergeinfo in the loaded revisions it may refer to revisions < X. r927423 strips out these ranges. This is fine if the partial dump of repos A is done in one step, e.g, svnadmin dump reposA -r200:300 > A.200.300.partial.dump svnadmin load reposB < A.200.300.partial.dump because those revisions don't refer to valid history re the mergeinfo's merge source. Unfortunately this fix breaks a (likely much more) common use case: Dumping a complete repository in multiple steps and then loading each chunk to the new repository, e.g.: svnadmin dump reposA -r0:100 > A.0.100.dump svnadmin dump reposA -r101:200 --incremental > A.101.200.dump svnadmin dump reposA -r201:300 --incremental > A.201.300.dump svnadmin load reposB < A.0.100.dump svnadmin load reposB < A.101.200.dump svnadmin load reposB < A.201.300.dump In this case, valid mergeinfo may be filtered from the 2nd and or 3rd load. I'll work on a fix that can handle both use cases, but for now I am changing my vote to -1 and reverting this backport. Paul