Bug 5979: Editing plot axis changes Y axis range [1]
Bug Number: 5979
Release notes (y/n): Yes
For Release Nums: 7.1 or 7.1.x

Plots created before RiverWare 7.1 don't include new configuration data to
support user specified plot axis units.  (Prior to this enhancements, an axis'
units were based strictly on the first slot assigned to that axis).  Because
of an internal issue which we don't have a good way to address, the first time
an old plot's axes are edited in the Axis Configuration dialog -- and until an
edit is applied and saved -- clicking that dialog's "Apply" button effects an
apply operation.

In general, that wouldn't be a problem, but it was, because that exposed an
actual error.  Every time a plot axes edit was applied, the AUTO-SCALING to
that axis (fitting the data plotted along that axis) was unnecessarily (and
incorrectly) performed.  THAT has been fixed.

But the first problem which we were unable to address also results in time
axis auto-scaling (consistent with the currently configured time axis scaling
settings).  This does still happen -- until an axis edit is applied and saved
for that particular plot.  This latter problem was also difficult to fix,
without risking introducing new plot initialization problems.