Quote from: clareoconsulting at Aug 29, 2014, 03:45 PMOf course, having different names for manager and connectors may well change the game in its entirety, but I thought I'd at least share my experience with moving the core -- it's been flawless on upgrade.
Well... I had a little time free, so did a fresh install of 2.2.14-Advanced, moving core outside document root, and renaming both manager and connectors directories using those options within setup. No extras or content, just a "hello world" home page.
Ran an upgrade to 2.2.15-Advanced as described in my previous post. It ran without error. Timestamps in the renamed manager and connectors matched the time of the upgrade, so it seems that setup successfully found those directories.
Upgraded that -- same technique -- to 2.3.1. Had the same duplicate key warning Susan mentioned, but I think that's a red herring. No other issues, and the time stamps in the renamed manager & connectors directories changed again to the time of running setup.
Mileage may vary on a site with content, extras, etc., but on upgrade of fresh Advanced installs, all went pretty well.