On Tiki v1.8RC3 I've found that different versions of a
wiki page may have the same version number. You can
see this by editing a wiki page then looking at the
history. The current and the most recent previous
version have the same ver number. Then, if a rollback
is performed to the most recent previous version it is
deleted entirely. The duplicate ver number is visible
in the attached screen shot. In addition it can be
seen that a number of versions in the list are missing.
I didn't delete them explicitly. They were removed as
part of the error prone naming/rollback process.
What's the proper Group for this version of Tiki?