[GNC] When changing to different version of GNUcash what should be done with data base or files?

[aeneas]

It seems that there always exists a possibility that data base/file
structures can change from one version to another of GNUcash.  Generally
speaking developers try to consider this and may make accommodation for some
older versions in newer versions of their software which means there is a
chance that newer versions of the software will function properly when using
data bases/files produced by older versions.  However, when needing to
migrate backward from a newer version to an older version this is likely to
be more problematic.  The nature of the data bases/files that GNUcash is
producing is such that failure to do this properly risks the creation of
serious problems when making such migrations.  This owes to the notion both
that the data consists of financial records as well as the idea that a large
amount of data accumulated over a long period of time may be involved.

Therefore it would seem that changing the version of GNUcash is something
that needs to be done carefully.  This should include some means to verify
success in a short amount of time insofar as it doesn't take long before the
idea of returning to a prior state known to be good can become extremely
difficult if not impossible.

Is there a procedure that ought to be followed when making such a change? 
What is the possibility that these considerations differ based on the chosen
output format?



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