Upgrading Plone 3.3 to Plone 4.3

Recently we moved a site from a long-time customer to Plone 4.3.

First off, the list of step to follow in http://plone.org/documentation/manual/upgrade-guide/version/ were quite exhaustive. There were some things that we did differently:

• We went straight from Plone 3.3 to 4.3.3, skipping the intermediate versions (4.0, 4.1 and 4.2). For our site this worked.
• After that, we ran all upgrade steps at once.
• We had to manually remove some Javascripts (mostly Kupu) from the registry, in order for TinyMCE to work.

The sooner you upgrade to a more recent stable version, the smaller the hassle. Also, there’s a performance improvement (see image), and some nice new features. See http://www.sixfeetup.com/blog/five-reasons-why-waiting-isnt-the-best-upgrade-strategy for more reasons to upgrade.