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During the Jasig server migration in Spring of 2010 the Subversion repository had about 28000 empty revisions filtered out. This resulted in the revision numbers changing. Below is a mapping from a set of old revision number ranges to new revision numbers. To use the mapping take your old revision number find the largest value smaller than it in the Old column then subtract the value in the Adjustment column. For example 48609 - 27989 = 20620. To verify a mapping look at the pre-migration ^jasig_svn_pre_migration.log.gz SVN commit log and compare the commit message, date, time and author with what svn log -r newrev https://source.jasig.org returns.
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