I have 2 CSA SE 1111 appliances with 3.2.x versions.
In the Installation Guide for 4.1 version appears the appliances with 3.2.x versions can be upgrade to 4.1 directly but seeing another posts I saw I should firs upgrade them to 3.3.x.
By the way, I look for in many documents but i didn't find it, why there is 3 kinds of upgrades, Management, ACS Software and recovery ISO?.
Many thanks for your help
Backups have to be restored on devices with the same version (exact match I believe) as the one that was used to save that backup. You can try to backup your 3.2.1 configuration and see if you can import it into a 3.2.3, however that is not a guarantee that it will work fine.