David,
I recommend you to install the newest CatTools version -- 3.9.1. It will give you a 14-day evaluation period where you can use all the features without any license, i.e. enough time to migrate the old installation. Once the new installation is up and running, you can deactivate the old one and activate the new one. (The activation key for v3.9.x can be found on your customer portal.)
The above scenario applies to single installation. If you plan to migrate a higher tier (e.g. country license), please let me know offline and I would check with engineering.
Regards,
Jiri
