My suggestion is to consider a fresh installation on J! 3.x" -->end of quote.
Considering a new start with full blown running campaigns is no fun and is going to result in disappearing customers for.
The reply to above ticket filed took almost 36 hours after posting!
So we filed 30 hour ago a new ticket with all access details expecting some kind of support with the upgrade...However we are still waiting and we are mighty disappointed with the horrendous support by iJoomla. An apology as posted after the first ticket with "Sorry about the delay, we had some troubles these days." is not acceptable for a commercial product for which our client has paid a lot of money.
It is for us as Professional Services Provider for Joomla not acceptable that a commercial extension is not upwards compatible and that no upgrade instructions are provided nor way to migrate to a new version.
This customer asked us to help him with migrating his data from 2.5 to 3.2, which we happily did FREE OF CHARGE. The delay was due to the amount of time it took us to do this. This review and complaint is truly puzzling to us as we did our best to make him happy and indeed migrated all his info, which is way above and beyond our call of duty.
You want to migrate? This extension is the way to go (!)