DOCUMENTATION.upgrade

How to upgrade:

Basically, any new installation of FCP web editor doesn't have to be backward compatible with
any older installation. New version will probably contain some new files, and will exclude some old
files. For that reason, it is recommended to completely delete the old installation directory
before installing any new version. However, you may find it useful to make a backup of your old
installation, so you can reuse some settings (most importantly, database login infos from config.php
or mandrillapp account settings if you used it in inc_mail.php).

The database tables are most likely modified with new version, so you should remove them
before installing new version, since new version won't be able to update your existing tables,
it will also not be able to reuse your existing tables. It is recommended to backup your
old tables, just for the case.

- install a fresh installation as described in DOCUMENTATION.install
  (make sure to use a different database name for fresh installation)

- if you want to preserve your existing data (diagrams, users, etc),
  you can wisely copy them from your database backup to newly created
  tables. You should manually check for missing columns in your old
  tables, and wisely add missing values to them if necessary.

  As an example, old version can store State Machines in table
  'machines' whereas new version may use table 'diagrams' instead (the
  table has been renamed). New version may contain columns editorType
  and isEmpty in table 'diagrams', while those are missing in old
  version, just put there "State Machine" in editorType if you're
  missing it, and 'N' for isEmpty.