I'm chuckling at this mailing from ERPDEVELOPERS (it's the old Hightower owners) promising Zero Impact upgrades.
What I think they're getting at is Custom Office + Scripting.
And if I'm wrong then --- never mind.
However at Meeting of the Minds Jon Reiter had a great session about enhancements and went over some of the myths of scripting v code changes.
And one of the myths is that scripting means you don't have to worry about upgrading the scripting end of things during an upgrade.
Granted - that might be true in some cases. But I don't think it's true in most complex cases. And frankly who does scripting or enhancements UNLESS they have a complex situation (Answer: Nobody ).
Even simple stuff like Custom Office screen panel changes can be somewhat problematic depending upon the upgrade.
Here's the mailing that I just received
http://campaigns.erpdevelopers.net/t/ViewEmail/j/33174680C5E043EA/75E65ACBEF0820D7C68C6A341B5D209E