TOPIC: Upgrading from 2.3 to 2.7 , possible?

Is it possible to upgrade from 2.3 to 2.7?
Or do I have just to uninstall and install new version? What about the data? lost?
Thanks

2.3? Seriously? Wow... that's some old stuff.

You will need to first upgrade to 2.6.9. Then you can upgrade to 2.7.x. You'll need an active license to get the current package. If yours is expired, you need to purchase a new one. Then when you download the new package, you will fine 2.6.9 inside with full upgrade instructions. Then you can upgrade from there 2.7.x. Be very careful to follow all of the upgrade instructions. You'll have a chunk of time involved here. It would have been easier had you done some upgrades at various points over time. Regardless, it's still possible to upgrade and keep your old data. Just have to follow all of the steps found in the new package instructions.